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<div class="csl-entry">Bretterbauer, K., & Weber, R. (2003). <i>A primer of geodesy for GIS users</i> (2., rev.extended ed., Vol. 64). Inst. of Geodesy and Geophysics, Dept. of Advanced Geodesy. https://resolver.obvsg.at/urn:nbn:at:at-ubtuw:3-357</div>
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