Davis, Charles H. Reducing fertilizer costs / prepared by Charles H. Davis - New York : , . United Nations (UN) , 1974 - 44 p. : ill. ; 24 cm. - Fertilizer industry series ; monograph no. 7 . "ID/SER.F/7." Includes bibliographical references and index. Subjects--Topical Terms: Fertilizer industryFertilizers--Economic aspects Gov. Doc. Class. No.: UN IDO FIS M-7