00276    a2200109   4500020001500000082001500015100002000030245003000050260004600080300002200126650001800148  a8174880003  a660.6bCHH  aChhatwal, G. R.  aTextbook of biotechnology  aNew DelhibAnmol Publicationsc1995g1995  a[vii],407p.c25cm  aBiotechnology