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040 _cPK-IsLIS
082 _a570
_bS2457
100 _aSarkar, B.
245 _aInvestigatory projects in biology
_cby B. Sarkar, M. Majumdar
260 _bTata McGraw Hill,
_aNew Delhi :
_c1984
300 _axii, 144 p.
650 _aBiology
942 _cBK
505 0 _aMorphology and anatomy; Plant and animal physiology; Cell biology and genetics; Plant and animal behavior; Population ecology and pollution