The science of agriculture :
Herren, Ray V.
The science of agriculture : a biological approach / Ray V. Herren. - 3rd ed. - Clifton Park, NY : Thomson/Delmar Learning, c2007. - xvii, 646 p. : ill. (chiefly col.), col. maps ; 29 cm.
Includes index.
1401898009 9781401898007
Agriculture.
630 / HES
The science of agriculture : a biological approach / Ray V. Herren. - 3rd ed. - Clifton Park, NY : Thomson/Delmar Learning, c2007. - xvii, 646 p. : ill. (chiefly col.), col. maps ; 29 cm.
Includes index.
1401898009 9781401898007
Agriculture.
630 / HES