Pan by clicking and dragging any point on the map.
Zoom by clicking on + or - in the upper right.
Open the map in a larger window by clicking on the expand arrows in the upper left.
Click on the camera to save the image to your computer.
Hover over a country to see the number of citations and hits.
Click on the list view to see unmappable terms.
How the map is generated:
Shading is generated based on current (not historical) country boundaries.
The map is based on geographical subject terms tagged for each citation.
The hit count (not the citation count) is used to calculate the darkness of the shade for each country.
Sometimes a single citation adds multiple hits to a country. For example, Paris, France, and Europe each count as one hit for France. (The subject Europe provides one hit to each European country.)
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