000 00393nam a2200169Ia 4500
008 180424s9999 xx 000 0 und d
084 _a514 R4
100 _a"Rider, Paul R"
245 0 _aPlane Trigonomentry
250 _a\\194900ENGGPSX
260 _aMacmillan
260 _b1949
260 _cNew York
300 _aviii+180p
500 _aincludes index and biblioraphy
942 _cBK
999 _c7767
_d7767