Region
- United States 76 results
- Developing countries 22 results
- Great Britain 14 results
- Latin America 10 results
- Brazil 8 results
- California 8 results
- Canada 8 results
- Chicago 6 results
- England 6 results
- Europe 6 results
- Illinois 6 results
- India 6 results
- Kenya 6 results
- Africa 4 results
- Appalachian Region 4 results
- Australia 4 results
- Bolivia 4 results
- Ecuador 4 results
- Indonesia 4 results
- Japan 4 results
- London 4 results
- Netherlands 4 results
- New York (State) 4 results
- Pennsylvania 4 results
- Caribbean Area 3 results
- Adjuntas 2 results
- Adjuntas (P.R.) 2 results
- Africa, Southern 2 results
- Allegany County 2 results
- Amsterdam 2 results
- Appalachian Region, Southern 2 results
- Asia 2 results
- Beltway (Chicago, Ill.) 2 results
- Brooklyn (New York, N.Y.) 2 results
- Calcutta 2 results
- Calcutta (India) 2 results
- California, Northern 2 results
- Chatham County (N.C.) 2 results
- Chesapeake Bay Region (Md. and Va.) 2 results
- Chile 2 results
- China 2 results
- Columbia River Watershed 2 results
- Corpus Christi 2 results
- Corpus Christi (Tex.) 2 results
- Corpus Christi Bay 2 results
- Corpus Christi Bay (Tex.) 2 results
- Detroit 2 results
- Detroit (Mich.) 2 results
- East Liverpool 2 results
- Egypt 2 results more…