TY - GEN digital ID - 139573506 TI - The opium question AU - Warren, Samuel AU - Gale Cengage Learning PY - 1840 PB - London James Ridgway DB - UniCat KW - Opium trade KW - China -- History -- Opium War, 1840-1842 UR - https://www.unicat.be/uniCat?func=search&query=sysid:139573506 AB - ER -