000 00335nam a2200109Ia 4500
008 211215s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aSimpson, J C E
245 0 _aCondensed Pyridazine and Pyrazine Rings ( Sr Vol No 5 )
260 _bInterscience Publishers
_aNew York
_c1953
942 _c1
999 _c71404
_d71404