2417.  (Stati Uniti - Agricoltura - Agronomia)
NORMAN A. G. a cura di
Advances in agronomy. Prepared under the Auspices of the American Society of Agronomy. Volume V
New York, Academic Press Inc., Publishers, 1953.

Euro 25,00

In-8°, pp. XII, 422, legat. edit. Con alcune illustrazioni b/n nel testo. Dall'indice: S. C. Salmon - O. R. Mathews - R. V. Leukel, A half century of wheat improvement in the United States; F. E. Broadbent, The soil organic fraction; L. V. Hurlbut, Progress in agricultural engineering; M. L. Jackson - G. Donald Sherman, Chemical weathering of minerals in soils; R. R. McKibbin, The changing pattern of agronomy and horticulture in Canada; O. R. Neal, Soil management for conservation and productivity.