Walker, Tomas S. books & textbook
African Roots/American Cultures: Africa in the Creation of the Americas
Sheila S. Walker Michael L. Blakey Tomas Olivera Chirimini Yvonne Daniel Howard Dodson Shelley Fisher Fishkin Jesus Chucho García Lisa Sánchez González Brenda Dixon Gottschild
Rowman & Littlefield Publishers /2001-08-21 Paperback / 375 Pages
isbn-10: 0742501655 / isbn-13: 9780742501652
Crop Improvement, Adoption, and Impact of Improved Varieties in Food Crops in Sub-Saharan Africa
Walker, Tomas S. Alwang, Jeffrey R.
CABI /2015-12-04 Hardcover / 478 Pages
isbn-10: 1780644019 / isbn-13: 9781780644011