000 00507 a2200253 4500
001 169393
020 _a
041 _aeng
080 _a625.746:656.05
245 _aNight visibility 1963 and 1964,10 reports :
250 _a
260 _aWashington, D. C.
260 _bHRB
260 _c1965
300 _a88
300 _c
856 _uTRB
490 _aNASA CR - 2851 : vol. - 1 : 1979
100 _aTransportation Research Board
700 _a
650 _a
650 _a
942 _cPP
942 _2UDC
999 _c190336
_d190336