00317nam a2200133Ia 4500008004100000082000800041082001000049100001900059100001600078245003700094260001400131260002900145260000900174230118s9999||||xx |||||||||||||| ||und||  a547  bTEW/A  ak.s   btewari  bs.nmehrotra 2aa text book of organic chemistry  anew delhi  bvikas publishing pvt ltd  c1990