00341nam a2200121Ia 4500008004100000020001800041040003800059100001900097245004200116250000800158260003700166300001600203211231s9999    xx            000 0 und d  a81-7800-061-x  cJayakar Knowledge Resource Centre  aAnjaneyulu , Y 0aIntroduction to environmental science  a1st  bBS PUBLICATIONSaHyderabadc2004  axxv,734p p.