- Z - Form descriptors
- Z.01 - Physical format top
- Audio-cassettes
- Compact disks
- Microfiches
- Microfilms
- Paper
- Photographic films/slides
- Printed version
- Sound media
- Video cassettes
- Z.02 - Types of documents/materials (form) top
- Z.02.01 - Types of textual documents/materials (form)
- Appendices
- Books
- Cartographic materials
- Chapters
- Collections of articles
- Daily newspapers
- Elements of monographs
- Essays from books
- Journal articles
- Journal-like series
- Journals (periodicals)
- Leaflets
- Loose leaf publications/integrating ressources
- Monographs
- News and information services
- Newspaper articles
- Official publications
- Papers (textual documents)
- Parts of periodicals
- Prefaces
- Referred document items
- Serials
- Series
- Sets of articles
- Special subject issues (bibliographically independent)
- Special subject issues (part of a periodical)
- Weekly newspapers
- Yearbooks
- Z.02.02 - Types of non-textual documents/materials (form)
- Audio-visual recordings
- Blogs
- Databanks
- Electronic publications
- Pictures/photographs
- Websites
- Z.02.03 - Frequency of publication (serials)
- Annual serials
- Bi-monthly serials
- Daily serials
- Fortnightly serials
- Four-monthly serials
- Frequency of publication
- Half-yearly serials
- Irregular fascicles/updates
- Irregular serials
- Monthly serials
- Quarterly serials
- Regular fascicles/updates
- Regular serials
- Serials no longer published
- Serials published several times a week
- Serials with eight issues a year
- Two yearly serials
- Weekly serials
- Z.03 - Types of documents/materials (content and source) top
- Z.03.01 - Types of documents/materials in general (content)
- Abstract journals
- Abstracts
- Advertisements
- Book/article reviews
- Collections (libr)
- Commentaries on published works
- Correspondence
- Debates
- Draft texts
- Excerpts/abridged texts
- Festschrifts
- Forecasts
- General overviews
- Grammars/language tuition materials
- Instalments (part works)
- Literature surveys
- Magazines
- Manuscripts
- Multipart works
- Off prints
- Omnibus reviews
- Patent specifications
- Periodical like series of special subject issues
- Quotations/citations
- Readers letters
- Reprints
- Schoolbooks
- Standards specifications/collections of standards
- Subseries
- Textbooks
- Travel guidebooks
- Z.03.02 - Types of textual documents (content)
- Administrative documents
- Charters
- Commentaries on laws/legal regulations
- Documentation/collections of documents
- Draft international treaties
- Draft laws/legal regulations
- Draft resolutions
- Historical source materials
- Law case books
- Law gazettes
- Official documents
- Resolutions/decisions
- Statute books
- Statutes/bylaws of institutions
- Texts of agreements/contracts
- Texts of constitutions
- Texts of court decisions
- Texts of statutes/laws
- Z.03.03 - Statements and declarations
- Communiques
- Diplomatic notes
- Formal declaration/standpoint
- Government policy statements
- Memoranda
- Parliamentary debates
- Parliamentary questions and answers
- Policy statements
- Positions taken by institutions/organs
- Press releases/statements
- Resolutions/declarations
- Statements by significant persons
- Statements of goals/demands
- White/green papers
- Z.03.04 - Publications of institutions
- Company publications
- Ecclesiastical publications
- Government publications
- Official party publications
- Parliamentary papers
- Pressure group publications
- Publications of institutions
- Publications of international government institutions
- Publications of international nongovernment institutions
- Publications of national government institutions
- Z.03.05 - Reports
- Activity reports
- Annual reports
- Case studies
- Country related contents
- Country reports
- Economic reports
- Economic sector reports
- Experience reports
- Expert opinions
- Feasibility studies
- Final reports
- Government reports
- Half-year reports
- Interim reports
- Monthly reports
- Preliminary studies
- Progress reports
- Project reports
- Quarterly reports
- Reports
- Research reports
- Travel reports
- Weekly reports
- Z.03.06 - Research documents
- Doctoral theses
- Masters theses
- Postdoctoral theses
- Progress reports
- Research documents
- Research programmes
- Research proposals
- Research reports
- Studies
- Theses and dissertations
- Z.03.07 - Conference/Meeting documents
- Academic/research conference reports
- Addresses/speeches
- Agenda
- Conference minutes/records
- Conference papers
- Conference proceedings
- Conference programmes
- Conference reports
- Hearings (parliamentary)
- Lectures
- Lists of participants
- Meeting/conference materials
- Political conference reports
- Political speeches
- Z.03.08 - Mass media materials
- Caricatures
- Commentaries (media)
- Interviews
- Mass media materials
- News/agency reports
- Newspaper articles
- Opinion polls/opinion research
- Press views/press reviews
- Readers letters
- Reporting
- Z.03.09 - Information sources about individuals
- Biographies
- Diaries
- Directories of persons
- Information/material about persons
- Memoirs
- Obituaries
- Personal data
- Z.03.10 - Bibliographies/Listes of documents or materials
- Acquisitions lists
- Area studies bibliographies
- Bibliographical references
- Bibliographies
- Bibliographies of bibliographies
- Bibliographies of periodical articles
- Bibliographies of periodical titles
- Bibliographies of reviews
- Library catalogues
- Lists of institution publications
- Lists of new publications
- Lists of official publications
- Lists of publications
- Lists of staff member publications
- Lists of theses/dissertations
- National bibliographies
- Serials holdings lists
- Z.03.11 - Directories/Indexes
- Address/telephone directories
- Classification systems
- Conference directories
- Course prospectuses
- Directories of institutions
- Directories of persons
- Directories/indexes
- Geographical indexes
- Indexes of abbreviations
- Indexes of institutions
- Indexes of persons
- International trade classifications
- Internet references
- Key word lists
- Library code lists
- Lists of countries
- Lists of events
- Lists of new publications
- Lists of products
- Subject indexes
- Tables of contents
- Terminology reference works
- Thesauri
- Title indexes
- Trade directories
- Z.03.12 - Reference work
- Area handbooks
- Atlases
- Chronologies
- Dictionaries
- Encyclopedias
- Glossaries
- Handbooks
- Reference works
- Specialist reference works
- Z.03.13 - Data/Facts
- Catalogues
- Chronologies
- City maps
- Data
- Data/information collections
- Documentation/collections of documents
- Exhibition catalogues
- Graphs/diagrams
- Maps
- Mathematical/chemical formulas
- Numerical data/statistical data
- Organograms
- Picture books
- Pictures/illustrated material
- Prospectus
- Statistics (collections)
- Surveys
- Tables (data)
- Technical drawings
- Technical specifications
- Time series
- Travel guidebooks
- Z.04 - Language of document top
- Afrikaans
- Albanian
- Arabic
- Bulgarian
- Cambodian
- Chinese
- Classical Greek
- Croat
- Czech
- Danish
- Dutch
- English
- Esperanto
- Estonian
- Finnish
- Flemish
- French
- German
- Greek
- Hebrew
- Hindi
- Hungarian
- Icelandic
- Indonesian
- Irish
- Italian
- Japanese
- Korean
- Latin
- Latvian
- Lithuanian
- Norwegian
- Persian
- Polish
- Portuguese
- Romanian
- Russian
- Serbian
- Slovak
- Slovenian
- Spanish
- Swedish
- Turkish
- Ukrainian
- Urdu
- Vietnamese (language)