000 00278nam a22001217a 4500
003 OSt
008 231229b |||||||| |||| 00| 0 eng d
082 _aP505
_bP87
245 _aProc. of the national academy of science U.S.A.
260 _c1981
300 _a78
942 _2ddc
_cBK
999 _c35256
_d35256