Weaver, John E. (John Ernest) 1884 1966 books & textbook
Development and Activities of Roots of Crop Plants; a Study in Crop Ecology
Weaver, John E. (John Ernest) 1884-1966 Jean, Frank Covert 1880- joint author Crist, John W. joi
Wentworth Press /2016-08-25 Hardcover / 174 Pages
isbn-10: 1361806397 / isbn-13: 9781361806395
