Boodish, H.M.
Our industrial age : a basic textbook dealing with the origin and development of our industrial society and its major economic social, and political problems
McGraw-Hill, 1949
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Gregor, Howard F.
Environment and economic life, an economic and social geography
Van Nostrand Reinhold, 1963
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De Blij, Harm J.
Geography : realms, regions, and concepts
John Wiley & Sons, 1994
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De Blij, Harm J.
Geography : realms, regions, and concepts
John Wiley & Sons, 1997
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De Blij, Harm J.
Concepts and regions in geography
John Wiley & Sons, 2005
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