George Colvin Humphrey books & textbook
Judging Dairy Cows...
Nabu Press /2012-04-07 Paperback / 50 Pages
isbn-10: 1279646586 / isbn-13: 9781279646588
Stock book (Vol-1)
University of California Libraries /2012-04-29 Paperback / 480 Pages
The Efficiency, Economy and Physiological Effect of Machine Milking, Volumes 1-3...
Woll, Fritz Wilhelm George Colvin Humphrey Edwin George Hastings
Nabu Press /2012-04-09 Paperback / 98 Pages
isbn-10: 1279925604 / isbn-13: 9781279925607
Comparative Efficiency for Growth of the Nitrogen of Alfalfa Hay and Corn Grain, Volumes 32-42...
Hart, Edwin Bret George Colvin Humphrey Frank Barran Morrison
Nabu Press /2012-04-09 Paperback / 44 Pages
isbn-10: 1279819685 / isbn-13: 9781279819685
The Role of the Ash Constituents of Wheat Bran in the Metabolism of Herbivora...
Hart, Edwin Bret Elmer Verner McCollum George Colvin Humphrey
Nabu Press /2012-04-07 Paperback / 26 Pages
isbn-10: 1279621869 / isbn-13: 9781279621868
Milking Machine Experiments
Woll, Fritz Wilhelm George Colvin Humphrey
Legare Street Press /2022-10-27 Paperback / 36 Pages
isbn-10: 1018719865 / isbn-13: 9781018719863
Judging dairy cattle Volume v.335(1921) 1921 [Leather Bound]
Humphrey, G. C. (George Colvin), -
Generic /2023T Leather Bound / 54 Pages
