Hughes, Harold D.
Crop production: principles and practices, handbook of information for the student of agriculture / Harold D. Hughes and Edwin R. Henson - New York: The Macmillan Company, 1946. - x, 816p.: ill., figs., tables, maps; 20 cm.
Includes bibliographical references and index.
Agriculture--Crops cultivation
Agriculture--Field crops--Rotation
Agriculture--Plant diseases
633 / HUG
Crop production: principles and practices, handbook of information for the student of agriculture / Harold D. Hughes and Edwin R. Henson - New York: The Macmillan Company, 1946. - x, 816p.: ill., figs., tables, maps; 20 cm.
Includes bibliographical references and index.
Agriculture--Crops cultivation
Agriculture--Field crops--Rotation
Agriculture--Plant diseases
633 / HUG