Columbia subject headings:
Demography--Data processing.
Demography--Statistical methods.
Geographic information systems--Handbooks, manuals, etc.
Harvard subject headings:
Demography--Data processing.
Demography--Statistical methods.
Geographic information systems--Handbooks, manuals, etc.
Princeton subject headings:
Demography--Data processing.
Demography--Statistical methods.
Geographic information systems--Handbooks, manuals, etc.