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2. 1991 Block Boundaries of India

Polygon New York University Restricted content
1991. This layer is a polygon theme representing block boundaries of India for 1991 and includes socio-demographic Census attribute data such as total po... ML InfoMap (Firm).

3. 1991 District Boundaries of India

Polygon New York University Restricted content
1991. This layer is a polygon theme representing district boundaries of India for 1991. Includes district socio-demographic Census attribute data such as... ML InfoMap (Firm).

4. 1991 State Boundaries of India

Polygon New York University Restricted content
1991. This layer is a polygon theme representing state boundaries of India for 1991 and includes socio-demographic Census attribute data such as total po... ML InfoMap (Firm).

5. 1991 Sub District Boundaries of India

Polygon New York University Restricted content
1991. This layer is a polygon theme representing sub district boundaries of India for 1991. Includes district socio-demographic Census attribute data suc... ML InfoMap (Firm).

6. Aeromagnetic map of Minnesota, southeastern region, Plate 1

University of Minnesota Public content
1991. Chandler, Val W. Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected... Minnesota Geological Survey.

7. Aeromagnetic map of Minnesota, southeastern region, Plate 2

University of Minnesota Public content
1991. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line... Minnesota Geological Survey.
1991. Aerospace Center (U.S.), United States. National Imagery and Mapping Agency., United States. Defense Mapping Agency., Harvard University. Center for Geographic Analysis., and East View Cartographic, Inc. This layer is a georeferenced raster image of the United States Aerospace Center's Tactical Pilotage Chart (TPC) 1:500,000 map series sheet entitle... Harvard Map Collection, Harvard College Library.