00417nam a2200145Ia 4500008004100000082002100041100001800062245005000080260004600130300000800176650001800184650001800202653002900220653002200249170901s1964    xx            000 0 und d  a574.873283bS65M  aSpirin, A. S. 0aMacromolecular Structure of Ribonucleic Acids  aNew YorkbReinhold Publishing Corp.c1964  a210  aLife sciences  aPure Sciences  aMacromolecular structure  aRibonucleic acids