Class Index
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Medical
Scientific (General)
Q 149.A-Z
Directories
Q 145
See also names of fields in which research is done
General
Special topics by subject
(Form number 20 or 20.5 in any NLM schedule where applicable)
See also Human Experimentation
Science
Q 180 - Q 180.5
(Form number 20-20.5 in any NLM schedule where applicable)
Demography
HB 1951 - HB 2577
Housing
HD 7285 - HD 7391
Public health aspects
Public housing
HD 7288.77 - HD 7288.78