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@InCollection{FriendlyPalsky06, author = {Michael Friendly and Gilles Palsky}, title = {Thematic Maps and Diagrams: Visualizing Nature and Society}, year = {2007}, publisher = {University of Chicago Press}, address = {Chicago, IL}, booktitle = {Maps: Finding Our Place in the World}, editor = {James R. Akerman and Robert W. Karrow}, pages = {205–251}, isbn = {0-226-01075-9}, url = {http://datavis.ca/papers/Maps_Chapter5-ocr.pdf}, }