00418cas a2200145   4500008004100000022001300041035002000054050001200074245001200086260003500098310001100133362002300144520009300167650001200260161019n                            eng u  a00368075  a(Sirsi) a198005  aQ1. S35  aScience  aNew JerseybPerkin Elmerc1993  aWeekly  aVol. 195, No. 4280  aProvides news of recent international developments and reseach in all fields of science.  aScience