00277nam a2200097Ia 4500008004100000040001100041245008400052260002000136300001300156300001000169251112s9999||||xx |||||||||||||| ||und||  aCNCLSA 0aProceedings of the National Academy Of Sciences of the United States of America  cAugust 15, 1999  aP. 1-537  bV. 86