00538nam a2200157Ia 4500 190328s9999||||xx |||||||||||||| ||und|| NITIL NITIL 21st 632.1 P39E Pal, B P Environmental conservation and development B P Pal Dehradun Natraj 1982 ix, 100p. Indian environment society Conservation of natural resources-India; Agricultural conservation-India; Nature conservation-India; Environmental sciences-India BKS 25103 25103 0 0 DDC 0 0 NITIL NITIL 2019-04-03 0 632.1 P39E 111592 2019-04-03 00:00:00 2019-04-03 BKS