TY - BOOK AU - Allsen, Thomas T. AU - Mair, Victor H. TI - The Steppe and the Sea: Pearls in the Mongol Empire SN - 9780812251173 PY - 2019/// CY - Philadelphia, Pennsylvania PB - University of Pennsylvania Press KW - China -- Mongolia -- Empire -- Mongol empire -- pearls -- socioeconomy -- trade -- Middle Age N1 - illustrated, includes maps, index; incl. bibliography ER -