00277nam a2200097Ia 4500008004100000040001100041245008400052260001800136300001600154300000900170251112s9999||||xx |||||||||||||| ||und||  aCNCLSA 0aProceedings Of The National Academy Of Sciences Of The United States Of America  c1985aU. S. A  aP.3081-4400  bV.88