Columbia subject headings:
Libraries--United States--Handbooks, manuals, etc.
Science--Library resources--Handbooks, manuals, etc.
Technology--Library resources--Handbooks, manuals, etc.
Harvard subject headings:
Libraries--United States--Handbooks, manuals, etc.
Science--Library resources--Handbooks, manuals, etc.
Technology--Library resources--Handbooks, manuals, etc.
Princeton subject headings:
Libraries--United States--Handbooks, manuals, etc.
Science--Library resources--Handbooks, manuals, etc.
Technology--Library resources--Handbooks, manuals, etc.