00299nam a2200109Ia 4500008004100000040001100041100001600052245005200068260004700120300001300167300000900180251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aJ.T. Edsall 0aProceedings Of The National Academy Of Sciences  c1969bThe National Academy Of ScienceaUSA  aP.1-1454  bV.64