000 002740000a22001210004500
245 _aThe elements of astronomy for surveyors
100 _aMackie, J.B.
250 _a8th ed.
260 _aLondon
_bGriffin
_c1978
080 _a52:528
_bM3
041 _aEN
942 _cBK
999 _c113881
_d113881