Tiwari, P.D.. Environment nutritional deficiency and its improvement / P.D. Tiwari. - New Delhi : Northern Book Centre , 1990. - xi,222p. : ills,figs,maps,tables ; 23cm. . NULL ISBN: 8185119775 Rs. 280.00 Subjects--Index Terms: NUTRITION Dewey Class. No.: 363.8 / TW/E