000 00353nam a2200157Ia 4500
008 230401s9999 xx 000 0 eng d
020 _a8123736223
041 _aEnglish
044 _aIndia
082 _bSL/I5
100 _aRamkrishanam, P.S.
245 0 _aEcology
260 _bNational Book Trust, New Delhi
650 _aScience
942 _2ddc
_cSL
999 _c329
_d329