000 00268nam a2200121Ia 4500
041 _aEN
082 _a540
_bSYL
100 _aSylvin, Morris .
245 0 _aHeterocyclic Compounds /Morris Sylvin.
260 _bNew Delhi : IVY ,
_c2006
300 _a93
942 _cBK
999 _c27981
_d27981