Vlek Paul L G Ed. Micronutrients in tropical food crop production Vlek Paul L G Ed. - Dordrecht Martinus Nihhoff 1985 - viii, 260p. cm. - Developments in plant and soil scieces; 14 . Standard No.: 53125 Source: Textual Subjects--Topical Terms: FoodAgriculture Dewey Class. No.: J3:247:7, M5