000 00452nam a2200157Ia 4500
008 130910s9999 xx 000 0 und d
041 _aeng
082 _221st ed.
_a547.0072
_bIND/P
110 _aGovernment of India
245 _aPatents for inventions :
_borganic chemistry
_cGovernment of India
260 _aCalcutta :
_bGovernment of India ,
_cn. d.
300 _axi, 151 p.
653 _aChemistry-patents
653 _aPatent-chemistry
942 _cEN
_2ddc
999 _c8812
_d8812