00563nam a2200205Ia 4500001000900000003000500009008004100014010001100055040000900066082002000075100001400095245011100109250000800220260002500228300001100253440003000264650001600294650002800310700001900338Para_522CHAP220125s1989    xx            000 0 und d  a199277  cCHAP  aPA 575.10724 O4  aOld, R.W.  aPrinciples of gene manipulation :b an introduction to genetic engineering /c by R.W. Old & S.B. Primrose  a4a.  aOxford :b Blackwell  a437 p.  aStudies in microbiology;2  aGenética   aIngeniería genética  aPrimrose, S.B.