Student World Atlas (Maailma atlas)
Photographs on pages 58, 62- 63 (Southern California) Agricultural ,Employment 37
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World Resources
Photograph on page 62 (Rockiespring)
Copynghl © 2005 Freestockphotos ccm Oil, Natural Gas, and Coal 38-39
Pnotcqraphs on pages 68--69 No!. 194 ) Major Minerals 38-39
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Electrical Energy Production 39
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