@article{Mixon_2004, title={Cataloging Sheet Maps, the Basics}, url={https://cartographicperspectives.org/index.php/journal/article/view/cp47-mixon}, DOI={10.14714/CP47.474}, number={47}, journal={Cartographic Perspectives}, author={Mixon, Christopher H.}, year={2004}, month={Mar.}, pages={61–63} }