Jacob, Arthur, 1886- Fertilizer use : nutrition and manuring of tropical crops / by Dr. A. Jacob and Dr. H. v. Uexkull; translated by C. L. Whittles. - 3rd ed. - Hanover, Germany : Ackerbau, 1963. - 617 p. : ill. ; 30 cm. Subjects--Topical Terms: Fertilizers and manures. Agriculture -- Tropics. Dewey Class. No.: REF 631.810913 JAC