Columbia subject headings:
Contracts, Maritime (Roman law)
Food supply--Law and legislation--Rome.
Food supply--Rome--History.
Grain trade--Rome--History.
Maritime law (Roman law)
Rome--Commerce.
Harvard subject headings:
Contracts, Maritime (Roman law)
Food relief--Rome.
Food supply--Law and legislation--Rome.
Food supply--Rome.
Maritime law (Roman law)
Princeton subject headings:
Food supply--Rone--History.
Grain trade--Rome--History.
Rome--Commerce.