BANSAL,RAJ.K. creator text NEW DELHI NEW AGE INTERNATIONAL 2014 5TH monographic 561 ORGANIC CHEMISTRY NOMENCLATURE OF HETERO CYCLIC,THERE MEMBERED HETERO CYCLIC COMPOUNDS WITH ONE HETERO ATOM,FOUR MEMBERED HETERO CYCLIC COMPOUNDS WITH TWO HETERO ATOMSIX MEMBERED HETERO CYCLIC COMPOUNDS WITH LONE HETERO ATOM PYRIDINES,BICYCLIC RING SYSTEMS DERIVED FROM PYRIDINE,SEVEN MEMBERED HETERO CYCLIC 547.59,BAN 9788122435856