00278nam a2200097Ia 4500008004100000040001100041245001200052260009100064300001600155300000900171251112s9999||||xx |||||||||||||| ||und||  aCNCLSA 0aScience  cSeptember 5, 1969bThe American Association for the Advancement of ScienceaWashington  aP. 939-1384  bV.16