000 00421nam a2200181Ia 4500
008 180424s9999 xx 000 0 und d
020 _a8121924766
084 _a574.5 S55
100 _a"Singh, H R"
245 0 _aEnvironmental Biology
250 _a\\200500ENGGPSX
260 _aS Chand
260 _b2005
260 _cNew Delhi
300 _a210p.
500 _aincludes index and biblioraphy
942 _cBK
999 _c71023
_d71023