00297nam a2200097Ia 4500008004100000040001100041100002400052245004500076260006800121300001000189251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aHoward B. Andervont 0aJournal of the National Cancer Institute  cJuly 1961 . December 1961bThe National Cancer InstituteaU.S.A  bV. 27