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| Periodicals A-Z | PUBLISHER's Journal Indexes |
| Environment | |
| Internet Resources | |
| Number in brackets is the linkrank. The lower the number the more popular. | |
| GreenFile [615] GreenFILE indexes scholarly and general interest titles, as well as government documents and reports
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| NOAA National Data Buoy Center [1484] Data from buoys around the world | |
| United Nations Environment Programme [953] | |
| US Environmental Protection Agency [1113] |