1919 Yields from ten wheat fields in Egypt
Hopkins, Cyril G. and others
1919 Yields from ten wheat fields in Egypt - Illinois 1919 - 2: p. - Illinois Agricultural Experiment Station, Circular, No. 236 .
Wheat
1919 Yields from ten wheat fields in Egypt - Illinois 1919 - 2: p. - Illinois Agricultural Experiment Station, Circular, No. 236 .
Wheat