Columbia subject headings:
Harvard subject headings:
Charitable uses, trusts, and foundations (Islamic law)
Charitable uses, trusts, and foundations--Egypt.
Charitable uses, trusts, and foundations--Saudi Arabia.
Creative ability in technology
Intellectual property--Egypt.
Intellectual property--Saudi Arabia.
Inventions
Waqf
Waqf--Economic aspects.
Princeton subject headings:
Waqf--Law and legislation--Egypt.
Waqf--Law and legislation--Saudi Arabia.