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1. 1991 Block Boundaries of India

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).

2. 1991 District Boundaries of India

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).

3. 1991 State Boundaries of India

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).

4. 1991 Sub District Boundaries of India

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).

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

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...

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

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...

7. Arctic Ice Chart, April 2, 1991

1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 2, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

8. Arctic Ice Chart, April 22, 1991

1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 22, 1991. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

9. Arctic Ice Chart, April 29, 1991

1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 29, 1991. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

10. Arctic Ice Chart, April 8, 1991

1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 8, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).