000 00377nam a22001337a 4500
020 _a8121924766
082 _aQL638 .S56 2005
100 _aH. R. Singh
245 _aEnvironmental Biology
260 _aRam Nagar
_bS. Chand & Company Ltd
_c2005
300 _avii, 205p. :
_bill
505 _aIntroduction: Organism and Environment: Population: Biotic Community
942 _cBK
999 _c8926
_d8926