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| 044 | _aUSA | ||
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_a5/6 _bX-II |
||
| 245 | _aU.S. Government Research Reports | ||
| 260 |
_bOffice of Technical Services _c1954 |
||
| 270 |
_aUnited States Department of Commerce _bWashington _dWashington |
||
| 362 | _aJan - Dec,2004 | ||
| 362 | _a+ | ||
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