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history.com
http://www.history.com/topics/dust-bowl
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Organic Keywords: 507,513
Organic Competitors: 854
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PPC Keywords: 127
PPC Competitors: 2,419
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en.wikipedia.org
https://en.wikipedia.org/wiki/Dust_Bowl
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Organic Keywords: 26,359,258
Organic Competitors: 968
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PPC Keywords: 20
PPC Competitors: 165
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livinghistoryfarm.org
http://www.livinghistoryfarm.org/farminginthe30s/water_02.html
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Organic Keywords: 6,801
Organic Competitors: 881
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PPC Keywords: 0
PPC Competitors: 0
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english.illinois.edu
http://www.english.illinois.edu/maps/depression/dustbowl.htm
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Organic Keywords: 17,151
Organic Competitors: 0
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PPC Keywords: 0
PPC Competitors: 0
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5. |
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pbs.org
http://www.pbs.org/kenburns/dustbowl/legacy/
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Organic Keywords: 416,178
Organic Competitors: 966
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PPC Keywords: 90
PPC Competitors: 28,449
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pbs.org
http://www.pbs.org/wgbh/americanexperience/features/general-article/dustbowl-drought/
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Organic Keywords: 416,178
Organic Competitors: 966
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PPC Keywords: 90
PPC Competitors: 28,449
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loc.gov
http://www.loc.gov/teachers/classroommaterials/presentationsandactivities/presentations/timeline/depwwii/dustbowl/
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Organic Keywords: 203,778
Organic Competitors: 1,033
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PPC Keywords: 220
PPC Competitors: 3,971
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u-s-history.com
http://www.u-s-history.com/pages/h1583.html
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Organic Keywords: 39,056
Organic Competitors: 806
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PPC Keywords: 0
PPC Competitors: 0
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9. |
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pbs.org
http://www.pbs.org/wgbh/americanexperience/features/timeline/dustbowl/
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Organic Keywords: 416,178
Organic Competitors: 966
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PPC Keywords: 90
PPC Competitors: 28,449
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motherjones.com
http://www.motherjones.com/environment/2009/11/new-dust-bowl
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Organic Keywords: 77,623
Organic Competitors: 1,115
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PPC Keywords: 6
PPC Competitors: 391
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