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2. 2000 county boundaries of the United States

Polygon Harvard University Public content
1972. Geological Survey (U.S.). This map layer portrays the 2000 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was crea... U.S. Geological Survey.

3. 7th congressional district of Indiana, 1972.

Indiana University Public content
1972. Boundaries of 7th Congressional District of Indiana in 1972 drawn on a copy of Counties and townships map, p. 10 of Kingsbury, Robert C., An atlas ...

4. Agra guide map

Image Princeton University Public content
1972. Survey of India. "Refer to this map as: 1:20,000 Agra guide map: first edition." Relief shown by 5 meter contour intervals and spot heights. Ancill... [Dehra Dun] : Survey of India, 1972.

5. Agra guide map

Image Princeton University Restricted content
1972. Survey of India. "Refer to this map as: 1:20,000 Agra guide map: first edition." Relief shown by 5 meter contour intervals and spot heights. Ancill... [Dehra Dun] : Survey of India, 1972.

6. Arctic Ice Chart, April 10, 1972

Polygon Stanford University Public content
1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 10, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

7. Arctic Ice Chart, April 13, 1972

Polygon Stanford University Public content
1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 13, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

8. Arctic Ice Chart, April 17, 1972

Polygon Stanford University Public content
1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 17, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

9. Arctic Ice Chart, April 20, 1972

Polygon Stanford University Public content
1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 20, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

10. Arctic Ice Chart, April 24, 1972

Polygon Stanford University Public content
1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 24, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).