Columbia subject headings:
Families--Handbooks, manuals, etc.
Life cycle, Human--Handbooks, manuals, etc.
Marriage--Handbooks, manuals, etc.
Harvard subject headings:
Families--Handbooks, manuals, etc.
Life cycle, Human--Handbooks, manuals, etc.
Marriage--Handbooks, manuals, etc.
Princeton subject headings:
Families--Handbooks, manuals, etc.
Life cycle, Human--Handbooks, manuals, etc.
Marriage--Handbooks, manuals, etc.