Columbia subject headings:
Harvard subject headings:
Agricultural laws and legislation--Periodicals.
Food law and legislation--Periodicals.
Land tenure--Law and legislation--Periodicals.
Produce trade--Law and legislation--Periodicals.
Princeton subject headings:
Agricultural laws and legislation--Periodicals.
Food law and legislation--Periodicals.
Land tenure--Law--Periodicals.
Periodicals.
Produce trade--Law and legislation--Periodicals.