00501nam a2200181Ia 4500 170901s1982 xx 000 0 und d 333.72 D36E Bandhu, Desh Education for Environmental planning and Conservation Dehradun Indian Environmental Society 1982 454 Economics Social sciences Environmental education Human ecology Ramanathan, N. L. ddc BK 2540 2540 0 0 ddc 0 0 RAU RAU 2017-10-18 UBSPD, Patna 200.00 0 333.72 D36E 42035 2017-10-18 1989-07-01 BK