Warren, James Francis The Sulu Zone 1768-1898 - Quezon City ADMU Press 2021 - xlviii, 290 pages: 23 cm. ISBN: 9786214481477 Subjects--Topical Terms: Sulu archipelago -- historySulu archipelago -- commerce -- historySlave Philippine -- history LC Class. No.: FIL DS 688 .S9 .W28 2021