00313nas a22001097a 4500008004100000022001400041245005300055260006600108300000700174362000600181650001600187190206s9999    xx            000 0 und d  a0011-3417  aCurrent contents. Physical and Chemical Sciences  aPhiladelphia, Pa.bInstitute for Scientific Informationc1977  av.  a   aMathematics