000 00232nam a2200097Ia 4500
008 230901s9999 xx 000 0 eng d
100 _aSINGH (RB)
245 0 _aENVIROMMENTAL AND STHDICS
260 _bRBD BOOKS
942 _2ddc
_cSCIENCE
999 _c20553
_d20553