Keywords: PATTERNED GROUND SHOWS ICE POLYGONS (LATTICE OUTLINES) AND TYPICAL SUMMER ARCTIC TUNDRA. MINERALS IN THE SOIL GIVE... - NARA - 550393.jpg Scope and content General notes 550393 Local identifier 412-DA-7908 Environmental Protection Agency 12/02/1970 - NARA-Author Cowals Dennis 1945- Photographer 2196327 <br /> Alaska 4189566 65 -153 <br /> Still Picture Records Section Special Media Archives Services Division NWCS-S National Archives at College Park 8601 Adelphi Road College Park MD 20740-6001 08/1973 Record group Record Group 412 Records of the Environmental Protection Agency 1944 - 2006 Record group ARC 708 DOCUMERICA The Environmental Protection Agency's Program to Photographically Document Subjects of Environmental Concern compiled 1972 - 1977 Series ARC 542493 File unit File unit ARC Variant control numbers Agency-Assigned Identifier 132/48/007908<br /> NAIL Control Number NWDNS-412-DA-7908 Other versions <gallery> File PATTERNED_GROUND_SHOWS_ICE_POLYGONS_ LATTICE_OUTLINES _AND_TYPICAL_SUMMER_ARCTIC_TUNDRA _MINERALS_IN_THE_SOIL_GIVE _-_NARA_-_550393 tif tif File PATTERNED_GROUND_SHOWS_ICE_POLYGONS_ LATTICE_OUTLINES _AND_TYPICAL_SUMMER_ARCTIC_TUNDRA _MINERALS_IN_THE_SOIL_GIVE _-_NARA_-_550393 jpg jpg </gallery> NARA-cooperation PD-USGov Patterned ground Frost erosion Soil polygons |