000 00255pam a2200109a 44500
082 _aNASA
_bTND-1128 -
100 _aClyde L. Ruthroff
245 1 _aProject echo- system calculations
260 _a
_b
_c
700 _aWilliam C. Jakes
997 _aTR9807 C
999 _c406237
_d406237