Columbia subject headings:
Associations, institutions, etc.--Poland--Management.
Endowments--Poland--Management.
Professional associations--Poland--Management.
Trade associations.
Harvard subject headings:
Associations, institutions, etc.--Law and legislation--Poland--Popular works.
Associations, institutions, etc.--Poland--Handbooks, manuals, etc.
Pressure groups--Poland--Handbooks, manuals, etc.
Princeton subject headings: