| 000 | 00385nas a2200121Ia 4500 | ||
|---|---|---|---|
| 008 | 170101s2017 xx 000 0 und d | ||
| 044 | _aU.S.A. | ||
| 245 | 0 | _aPROCEEDINGS of the National Academy of Sciences of the United States of America | |
| 260 |
_bNational Academy of Sciences _aWashington |
||
| 270 | _aNational Academy of Sciences | ||
| 362 | _aJan - Dec,1954 | ||
| 942 |
_2ddc _cP |
||
| 999 |
_c157111 _d157111 |
||