Collings, Gilbeart H.
Commercial Fertilizers: there sources and use / Gilbeart H. Collings - 5th ed. - New York : McGraw Hill, c1955 - xi, 617 p. : ill., maps ; 23 cm.
Includes bibliographical references and index.
631.8 / COC
Commercial Fertilizers: there sources and use / Gilbeart H. Collings - 5th ed. - New York : McGraw Hill, c1955 - xi, 617 p. : ill., maps ; 23 cm.
Includes bibliographical references and index.
631.8 / COC