000 00329nam a2200121Ia 4500
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040 _aCNCLSA
245 0 _aProceeding of the national academy of sciences
260 _cJune, 1984
_bNational Academy Of Science
_aU. S. A
300 _aP.3607-4616
300 _bV.81
942 _cJRBV
999 _c33498
_d33498