000 00301pam a2200133a 44500
082 _aNASA
_bCR-774 -
100 _a
245 1 _aIMPROVED ION SOURCES
260 _a
_bNasa,Washington, D.C.
_c1967
300 _aIX,54
500 _aBound With Nasa Cr-771-80
964 _gCIRC
997 _aTR9412 C
999 _c395132
_d395132