00304nam a2200109Ia 4500008004100000082001900041100002600060245003200086260005300118300001000171650001300181140113s9999    xx            000 0 und d  a576.858(02) K8  a"Fraenkel-Conrat, H."  aMolecular basis of virology  b"New york : Van nostrand reinhold company, 1968"  a642p.  aVirology