Àmbit geogràfic
- United States 38 results
- Great Britain 16 results
- Australia 6 results
- Canada 5 results
- New Zealand 5 results
- India 4 results
- England 3 results
- Developing countries 2 results
- Africa 1 results
- China 1 results
- Connecticut 1 results
- Europe 1 results
- European Economic Community countries 1 results
- Islamic countries 1 results
- Malaysia 1 results
- Mexico 1 results
- New Guinea 1 results
- Pakistan 1 results
- Papua New Guinea 1 results
- South Asia 1 results
- Wales 1 results
- Yugoslavia 1 results