00762nam a2200253Ia 4500 304781 BIBL 20210210062657.0 900802s1982 ag a b 00010 spa 80117702 Sp 8471031531 4.25 362.042 A543m QH541 .A533 1982 362.042 A543m Sb Ander-Egg, Ezequiel 52636 Local El desafío ecológico [por] Ezequiel Ander-Egg. Buenos Aires Hvmanitas 1982. 150 p. ill. 24 cm. Colección guidance 76387 Local Includes bibliographical references. Ecology 89958 Pollution Environmental aspects. 152331 Local 223328 223328 0 0 lc 0 QH_541_000000000000000__A533_1982 0 mbl 71922 12 12 20 2016-05-27 Perrone 6.00 486350 0 QH541 .A533 1982 50000001817666 2016-05-27 00:00:00 r:304781 6