00504nam a2200181Ia 450000500170000000800410001704000190005804100120007708200150008910000190010424500290012325000120015226000520016430000350021650400190025165000420027085000100031220251204165211.0131103s9999    xx            000 0 und d  aLoreto College  aEnglish  a526.9bDUG  aDugdale, R. H.  aSurveyingcR. H. Dugdale  a2nd ed.  aLondonbThe English Language Book Societyc1974  aviii,120 p.b ill., 57 figures  aReprinted 1975  aMathematical Geography - Serveying -   aLCLIB