Commercial fertilizers and soil fertility in California
Hibbard, P.L.
Commercial fertilizers and soil fertility in California - Berkeley 1916 - 47-97 p. - Fertilizer, Soil California Agricultural Experiment Station. Bulletin No. 272 .
Commercial fertilizers and soil fertility in California - Berkeley 1916 - 47-97 p. - Fertilizer, Soil California Agricultural Experiment Station. Bulletin No. 272 .