Columbia subject headings:
Americans--Foreign countries--Security measures--Handbooks, manuals, etc.
International business enterprises--Safety measures--Handbooks, manuals, etc.
International business enterprises--Security measures--Handbooks, manuals, etc.
Harvard subject headings:
International business enterprises--Security measures--United States--Handbooks, manuals, etc.
International business enterprises--United States--Safety measures--Handbooks, manuals, etc.
Princeton subject headings: