Yazar
w j b boatman
2 cilt bulundu.
Cilt sonuçları
The economic value of farm manure as a fertilizer on Iowa soils
W. H. Stevenson, P. E. Brown, L. W. Forman, W. G. Baker, J. L. Boatman, W. J. B. Boatman · Agricultural Experiment Station, Iowa State College of Agriculture and Mechanic Arts
245 sayfa · 1926
Farm manure / Economic aspects / Organic wastes as fertilizer
Soil survey of Randolph county, Indiana
W. H. Buckhannan, Thomas Elmer Barnes, W. J. B. Boatman, S. D. Conner, M. E. Waggoner, A. T. Wiancko, Purdue University. Agricultural Experiment Station, United States. Bureau of Chemistry and Soils · U.S. Govt. Print. Off.
36 sayfa · 1936
Soil surveys / Soils / Maps