00494nam a2200145Ia 450000100060000000300050000600500170001100800410002810000340006924500950010326000340019830000170023250000870024965000120033625070BIBL20210210062644.0911206|1975||||ag a |||||||00010|spa|d10aFoster, Phillips Wayne2Local10aIntroducción a la ciencia ambientalcPhillips Wayne Foster ; traducción del Carmen Gil0 aBuenos AiresbEl Ateneoc1975 a186 p.bill. aTranslation of : Programmed learning aid for introduction to environmental science 0aEcology