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Subject (Genre)
- Congresses64
- Periodicals36
- Handbooks, manuals, etc29
- Legislative hearings26
- Case studies24
- Electronic books21
- Bibliography11
- Environmental impact statements8
- Handbooks and manuals5
- Statistics5
- Maps4
- Rules and practice4
- Internet resources3
- Observations3
- Conference papers and proceedings2
- Cross-cultural studies2
- Databases2
- Surveys2
- Television news programs2
- Textbooks2