00281    a2200109   4500020001500000082001500015100001700030245003700047260005000084300001900134650001800153  a8125905820  a660.6bKUM  aKumar, H. D.  aModern concepts of biotechnology  aNew DelhibVikas Publishing Housec1998g1998  aix,424p.c24cm  aBiotechnology