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- Marshall Islands 1 results
- Mediterranean Region 1 results
- Micronesia (Federated States) 1 results
- Middle Atlantic States 1 results
- Mizoram 1 results
- Netherlands 1 results
- Nevada 1 results
- Niepolomice Forest 1 results
- Niepolomice Forest (Poland) 1 results
- Northeastern States 1 results
- Northern Hemisphere 1 results
- Norway 1 results
- Pinatubo, Mount (Philippines) 1 results
- Poland 1 results
- Prince William Sound Region 1 results
- Purari River Watershed (Gulf Province) 1 results
- Queensland 1 results
- Rocky Mountains 1 results
- Ross Sea (Antarctica) 1 results
- Saint Helens, Mount 1 results
- Saint Helens, Mount (Wash.) 1 results
- Sandaun Province 1 results
- South Asia 1 results
- Stechlin Lake 1 results
- Stechlin Lake (Germany) 1 results
- Stein River Watershed 1 results
- Stein River Watershed (B.C) 1 results
- Sundarbans (Bangladesh and India) 1 results
- Sweden 1 results
- Tumut (N.S.W.) Region 1 results
- Uganda 1 results
- Wales 1 results
- Washington (State) 1 results
- Yucca Mountain 1 results
- Yucca Mountain Region 1 results