State of the World 1990 : a Worldwatch Institute Report on Progress Toward a Sustainable Society / Lester R Brown; et al Brown, Lester R varstvo okolja -- onesnaževanje okolja -- kontrola onesnaževanja 330.9 STA Includes bibliographical references. New York : W.W. Norton & Co., 1990. 1990. Text XIII, 253 str : eng