1. DESCRIPTION OF THE DATA FIELD
Variable length
Essential filling Repetitive
2. DATA ELEMENT DEFINITION:
Pre-coded DeCS/MeSH descriptors used to represent the research subjects and historical periods studied.
3. NOTES:
a) One or more pre-coded descriptors are selected from the index.
b) DeCS/MeSH should be consulted, and guidelines from the Indexing Manual should be followed.
EXAMPLES:
a) Humans
- Female
- Pregnancy
- Child
- Preschool
b) Animals
- Rats
- Rabbits
- Cats
c) History of the 20th Century
