000 00503nam a2200217Ia 4500
008 170324s9999 xx 000 0 und d
020 _a0-87021-363-6
082 _a623.89
100 _aHobbs
100 _eAuthor
245 0 _aMarine navigation 2 : celestial and electonic
245 0 _cby Richard R. Hobbs
250 _a2nd
260 _aMaryland
260 _bNaval Institute Press
260 _c1981
300 _a343p
500 _aInclude index
650 _aNavigation
942 _cBK
999 _c9428
_d9428