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Form Numbers

• Range of numbers in an NLM classification schedule used to classify material by publication type or topical subheading
  • Usually numbers 1-49
  • Sometimes sections within a schedule (e.g. WO 201-233.1)

• Some numbers in the range of 1 through 49 reflect format and content types, others are for material with a special topical emphasis, for example:
  
  • 18 is for education
  • 21 is for the profession or specialty
  • 33 is for discussion of law

• Some main schedules are divided into sections with form numbers in each section. For example, within the QV schedule for Pharmacy and Pharmaceutics, form numbers QV 701-735 are used instead of the numbers QV 1-39 that are used for the rest of the Pharmacology schedule

Common Form Numbers (this is not a comprehensive list)

Classification Numbers	Publication Type or Specific Aspects
1	Organizations, Societies
5-7	Collected Works
11	History
13	Abbreviations, Dictionary, Encyclopedia
15	Classification, Phrases, Terminology
16	Statistics, Tables, Surveys
17	Atlas, Pictorial Work
18	Education
18.2	Examination Questions, Problems and Exercises, Outline, Programmed Instruction
22-22.1	Directory
25	Laboratory Manual
32-33.1	Legislation
39/49	Handbook