00269nam a2200109Ia 4500008004100000022001400041040001100055100001900066245003000085260003400115300001000149251112s9999||||xx |||||||||||||| ||und||  a0007-0920  aCNCLSA  aP.R. Twentyman 0aBritish Journal of Cancer  c1992bMacmillan Press LtdaUK  bV. 65