Bituminous Sands in Alberta Tar Sands
19 July, 2009 
GP01UMF 
★★★★★★ (B) 
Christoph von Lieven at Tar Sands Extraction Site in Canada
19 July, 2009 
GP037GM 
★★★★ (E) 
Melina Labouchan-Massimo at Tar Sands Extraction Site in Canada
19 July, 2009 
GP037GG 
★★★★ (E) 
Melina Labouchan-Massimo at Tar Sands Extraction Site in Canada
19 July, 2009 
GP037GF 
★★★★ (E) 
Bituminous Sands in Alberta Tar Sands
19 July, 2009 
GP01UMG 
★★★★ (E) 
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