Brown, Lester R. 1934- Tough choices : facing the challenge of food scarcity / Lester R. Brown. - London : Earthscan, c1996. - 159 p. : ill. ; 22 cm. - Worldwatch environmental alert series . - Worldwatch environmental alert series . Includes index. ISBN: 1853834327 Subjects--Topical Terms: Food supply. Dewey Class. No.: 363.8 / BRT