Hopkins, Cyril George books & textbook
Soil Fertility and Permanent Agriculture (Classic Reprint)
Forgotten Books /2018-08-24 Paperback / 705 Pages
isbn-10: 1330323491 / isbn-13: 9781330323496
Laboratory Manual for Soil Fertility: -1905
Hopkins, Cyril G. (Cyril George)
Cornell University Library /2009-07-24 Paperback / 74 Pages
isbn-10: 1112242759 / isbn-13: 9781112242755
Question summary to accompany "Soil fertility and permanent agriculture,"
Hopkins 1866-1919, Cyril G. (Cyril George)
Library of Congress /1912-12-31 Paperback / 36 Pages
The Story of the Soil, From the Basis of Absolute Science and Real Life: -1910
Hopkins, Cyril G. (Cyril George)
Cornell University Library /2009-07-24 Paperback / 376 Pages
The Farm That Won't Wear Out: -1913
Hopkins, Cyril G. (Cyril George)
Cornell University Library /2009-07-24 Paperback / 92 Pages
University of Illinois Agricultural Experiment Station. Urbana, June, 1899. Bulletin No. 55, pp. 205-240. Improvement in the chemical composition of the corn kernel
Leopold Classic Library /2015-07-20 Paperback / 44 Pages
The Orbs of Heaven; O A Popular Exposition of the Great Discoveries (Classic Reprint)
Hopkins, Cyril George McKnight
Forgotten Books /2012-06-11 Paperback / 356 Pages
For Better crops
Library of Congress / Paperback
The chemistry of the corn kernel . .
Hopkins 1866-1919, Cyril G. (Cyril George)
Library of Congress /1898-12-31 Paperback / 56 Pages
Soil Fertility Laboratory Manual: -1910
Hopkins, Cyril G. (Cyril George)
Cornell University Library /2009-07-24 Paperback / 98 Pages
