Snyder, J. P. (1993). Flattening the earth: Two thousand years of map projections. Chicago: The University of Chicago Press.
Παραπομπή Chicago StyleSnyder, John P. Flattening the Earth: Two Thousand Years of Map Projections. Chicago: The University of Chicago Press, 1993.
Παραπομπή MLASnyder, John P. Flattening the Earth: Two Thousand Years of Map Projections. Chicago: The University of Chicago Press, 1993.
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