Brown, Lester R. Tough choices : facing the challange of food scarcity / Lester R. Brown - New York : W. W. Norton, c1996. - 159p. ; 20 cm. - Worldwatch environmental alert series . ISBN: 0393315738 LCCN: Subjects--Topical Terms: AgricultureEnvironmental aspects. AgricultureEconomic aspects. Food supply. Food prices. LC Class. No.: S589.75 / .B76 1996 Dewey Class. No.: 338.1 / B877t