Columbia subject headings:
Power (Mechanics)--Handbooks, manuals, etc.
Power resources--Handbooks, manuals, etc.
Harvard subject headings:
Power (Mechanics)--Handbooks, manuals, etc.
Power resources--Handbooks, manuals, etc.
Princeton subject headings:
Power (Mechanics)--Handbooks, manuals, etc.
Power resources--Handbooks, manuals, etc.