00428    a2200157   4500020001500000082001500015100002600030245004300056250001200099260005000111300001800161650001700179650002800196650002500224700002100249  a0199635331  a572.8bNUC  aBlackburn, Michael G.  aNucleic acids in chemistry and biology  a2nd ed.  aNew yorkbOxford University Pressc1996g1996  ax,528p.c24cm  aBiochemistry  aLife sciences   Biology  aBiochemical genetics  aGait, Michael J.