00259nam a2200109Ia 4500008004100000040001100041100002000052245001300072260004200085300001300127300000900140251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aGeorge K. Hirst 0aVirology  cApril, 1971bAcademic PressaNew York  aP. 1-654  bV.34