Columbia subject headings:
Noncitizens--Soviet Union.
Harvard subject headings:
Noncitizens--Soviet Union--Handbooks, manuals, etc.
Tourism--Soviet Union--Handbooks, manuals, etc.
Princeton subject headings:
Noncitizens--Soviet Union--Legal status, laws, etc.
Soviet Union--Guidebooks.
Visitors, Foreign--Soviet Union--Legal status, laws, etc.