Columbia subject headings:
Harvard subject headings:
Leisure--Handbooks, manuals, etc.
Older people--Care--Handbooks, manuals, etc.
Older people--Health and hygiene--Handbooks, manuals, etc.
Retirement--China--Handbooks, manuals, etc.
Retirement--Handbooks, manuals, etc.
Princeton subject headings:
Leisure--Handbooks, manuals, etc.
Older people--Care--Handbooks, manuals, etc.
Retirement--China--Handbooks, manuals, etc.
Retirement--Handbooks, manuals, etc.