00286nam a2200109Ia 4500008004100000040001100041100001900052245003500071260004700106300001300153300001000166251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aA.J. Zuckerman 0aJournal of Virological Methods  c1980bNational Institutes of HealthaU.S.A  aP. 1-299  bV. 36