000 | 00456nam a22001097a 4500 | ||
---|---|---|---|
008 | 230717b |||||||| |||| 00| 0 eng d | ||
040 |
_aNational Science Library _cNational Science Library |
||
245 |
_aMicrofiche, microfilm and related equipment: _bA DDC bibliography _c/ Defense Documentation Center Alxendria, Virginia April 1968 - April 1971 |
||
260 |
_aWashington: _bNational Technical Information Service, _c1971 |
||
300 | _a47p. | ||
942 |
_2udc _cREF |
||
999 |
_c52744 _d52744 |