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Index of http://basin.org/data/images/
| Filename: acidrain.gif |  |
| Filename: beaker1.gif |  |
| Filename: beakeri.gif |  |
| Filename: beakers.gif |  |
| Filename: book.gif |  |
| Filename: bookshelf.gif |  |
| Filename: bush.gif |  |
| Filename: cattails.gif |  |
| Filename: chemical.gif |  |
| Filename: coal.gif |  |
| Filename: concrete.jpg |  |
| Filename: cow.gif |  |
| Filename: cycldree.gif |  |
| Filename: cyldref.gif |  |
| Filename: cyldrei.gif |  |
| Filename: dog.gif |  |
| Filename: factory.gif |  |
| Filename: factory2.gif |  |
| Filename: farm.gif |  |
| Filename: faucet.gif |  |
| Filename: folder.gif |  |
| Filename: house.gif |  |
| Filename: hydro.gif |  |
| Filename: kayak.gif |  |
| Filename: kayak2.gif |  |
| Filename: meter.gif |  |
| Filename: paint.gif |  |
| Filename: phmeter.gif |  |
| Filename: pick.gif |  |
| Filename: power.gif |  |
| Filename: rain.gif |  |
| Filename: raincld.gif |  |
| Filename: science.gif |  |
| Filename: sewage.gif |  |
| Filename: sewage2.gif |  |
| Filename: smog.gif |  |
| Filename: snowplow.gif |  |
| Filename: sun.gif |  |
| Filename: swim.gif |  |
| Filename: testube.gif |  |
| Filename: thermo.gif |  |
| Filename: toilet.gif |  |
| Filename: toilet2.gif |  |
| Filename: tree.gif |  |
| Filename: tree1.gif |  |
| Filename: tree2.gif |  |
| Filename: trout.gif |  |
| Filename: trout1.gif |  |
| Filename: trout2.gif |  |
| Filename: tub.gif |  |
| Filename: tube.gif |  |
| Filename: washmach.gif |  |
| Filename: Folder.gif |  |
| Filename: Tub.gif |  |
| Filename: watermt.gif |  |