00329nam a2200121Ia 4500008004100000022001400041040001100055100001900066245001200085260008600097300001300183300001100196251112s9999||||xx |||||||||||||| ||und||  a0036-8075  aCNCLSA  aFloyd E. Bloom 0aScience  cJuly 7, 1995bThe American Association for the Advancement of ScienceaWashington  aP. 1-892  bV. 269