003910000a22001450004500060000800000082001900008100001900027245003400046260004400080260000900124300000800133490002900141490002500170650005000195  a100  a574.873 28 BAL  aBalis,  M Earl  aAntagonists and nucleic acids  a Amsterdam, North- Holland Publishingco  c1968  a293  a10cFrontiers of biology  aFrontiers of biology  aNucleic acids/ Genetics- Nucleic acids/ Genes