000 002980000a22001330004500
245 _aThe elements of astronomy for surveyors
100 _aMackie, J.B.
250 _a7th ed.
260 _aLondon
_bGriffin
_c1971
300 _a292 p.
080 _a52:528
_bM3
041 _aEN
942 _cBK
_01
999 _c93127
_d93127