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1. Anadromous Stream Restoration Projects (Lines): Russian River, California, 1981-2002

1981. Circuit Rider Productions. This line shapefile was created by digitizing locations of stream habitat restoration projects marked on maps included in the paper documentation o... Circuit Rider Productions.

2. Anadromous Stream Restoration Projects (Points): Russian River, California, 1981-2002

1981. Circuit Rider Productions. This point shapefile contains the locations of completed projects (for which final reports have been received) funded through the California Depart... Circuit Rider Productions.

3. Anadromous Stream Restoration Projects (Polygons): Russian River, California, 1981-2002

1981. Circuit Rider Productions. This polygon shapefile includes habitat improvement projects, research projects (surveys and studies of streams, roads, watersheds), education proj... Circuit Rider Productions.

4. Arctic Ice Chart, April 2, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 2, 1981. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

5. Arctic Ice Chart, April 21, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 21, 1981. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

6. Arctic Ice Chart, April 23, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 23, 1981. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

7. Arctic Ice Chart, April 27, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 27, 1981. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

8. Arctic Ice Chart, April 6, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 6, 1981. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

9. Arctic Ice Chart, April 9, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 9, 1981. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

10. Arctic Ice Chart, August 12, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 12, 1981. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

11. Arctic Ice Chart, August 19, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 19, 1981. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

12. Arctic Ice Chart, August 27, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 27, 1981. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

13. Arctic Ice Chart, August 4, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 4, 1981. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

14. Arctic Ice Chart, December 10, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 10, 1981. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

15. Arctic Ice Chart, December 16, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 16, 1981. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

16. Arctic Ice Chart, December 22, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 22, 1981. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

17. Arctic Ice Chart, December 29, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 29, 1981. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

18. Arctic Ice Chart, December 3, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 3, 1981. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

19. Arctic Ice Chart, February 12, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 12, 1981. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

20. Arctic Ice Chart, February 16, 1981

1981. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 16, 1981. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).