Cowgill, Ursula M books & textbook
El Bajo De Santa Fe - Transactions of the American Philosophical Society Held At Philadelphia for Promoting Useful Knowledge - New Series Volume 53, Part 7
Ursula M. and G. E. Hutchinson Cowgill
American Philosophical Society /1963T Hardcover
AN AGRICULTURAL STUDY OF THE SOUTHERN MAYA LOWLANDS
Amer Anthro /1962T Pamphlet
Soil fertility and the ancient Maya,
Connecticut Academy of Arts & Sciences /1961T Paperback / 24 Pages
The History of Laguna de Petenxil: A Small Lake in Northern Guatemala.
Connecticut Academy of Arts and Sciences /1966T Paperback / 126 Pages
Bajo de Santa Fe: Transactions, American Philosophical Society (vol. 53, part 7) (Transactions of the American Philosophical Society)
The American Philosophical Society Press /1963-01-01 Paperback / 51 Pages
isbn-10: 1422376265 / isbn-13: 9781422376263
