000
00262pam a2200109a 44500
082
_a
NASA
_b
CR-1957
100
_a
Harry J Older
245
1
_a
Human factors aspects of atr traffic control.
260
_a
_b
_c
700
_a
Bernard J Cameron
997
_a
TR12973 C
999
_c
406313
_d
406313