00270nam a2200097Ia 4500008004100000022001400041040001100055245003500066260006200101300000900163251112s9999||||xx |||||||||||||| ||und||  a0011-3409  aCNCLSA 0aCurrent Contents Life Sciences  cMay 10, 1999bInstitute For Scientific InformationaU.S.A  bV.38