[Papers], 31st annual meeting of the Institute of Navigation : Washington, D.C., 24 - 26 June 1975
Annual meeting. Institute of Navigation ; 31 ; 1975 ; Washington, DC Annual meeting. Institute of Navigation ; 31 (Washington, DC) : 1975.06.24-26
1975
Getr. Zählung
Ill., graph. Darst.
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