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BUILDING BIKE CITIES.

• Authors : Watson, Della

Subjects: Cycling; Colombian politics & government; Bicycle lanesBogotá (Colombia); ColombiaPenalosa, Gil

• Source: Sierra. Mar/Apr2009, Vol. 94 Issue 2, p40-41. 2p.

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Skyscraper, Northwest-Style.

Subjects: Mountaineering; Hiking; Rock climbingCascade Range; San Jorge River (Colombia); Colombia

• Source: Sierra. Mar/Apr2006, Vol. 91 Issue 2, p52-53. 2p. 2 Color Photographs.

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BOLD STROKES.

• Authors : Slater, Dashka

Subjects: *Environmental law; *Air quality; *SmogColombia; Beijing (China); China

• Source: Sierra. Jan/Feb2009, Vol. 94 Issue 1, p22-22. 1/3p.

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We're No. 28!

• Authors : Slater, Dashka

Subjects: *Ecological surveys; *Environmental health; *Renewable energy sourcesUnited States; Slovakia; Colombia

• Source: Sierra. May/Jun2006, Vol. 91 Issue 3, p9-9. 1/3p.

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