00471nam a2200133Ia 4500008004100000020001800041050001900059100001500078245008800093260002800181300002000209650004700229700006100276120720s9999 xx 000 0 und d a968-25-0088-5 aTD174 T87 1973 aTURK, AMOS aECOLOGIA, CONTAMINACION, MEDIO AMBIENTE / AMOS TURK, JONATHAN TURK, JANET T. WITTES aMEXICO : INTERAMERICANA a227 P. / 23 CM. a1. CONTAMINACION 2. ECOLOGIA 3. POBLACION aI. TURK, JONATHAN COAUT. II. WITTES,JANET T. COAUT̀̀