Berger, Joseph. Maize production and the manuring of maize / Joseph Berger. - Geneva : Centre d'Etude de l'Azote, 1962. - 315 p. : ill., maps ; 28 cm. - Centre d'Etude de l'Azote, Geneva. Publications on soi fertility and fertilizers ; no. 5. . Includes bibliographical references and index Subjects--Topical Terms: Maize production. Maize manuring. Dewey Class. No.: 633.15