000 00276pam a2200109a 44500
082 _aNASA
_bTND-1132 -
100 _aDegrasse R. W.
245 1 _aProject echo- the dual channel 2390-mc traveling-wave maser
260 _a
_b
_c
700 _aScovil H.E. D.
997 _aTR9694 C
999 _c406205
_d406205