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  1. Agriculture, Tehuacan Valley.
    By: Smith, C. Earle
    Publication info: [Chicago]Chicago Natural History Museum,1965.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Agriculture  Mexico  Tehuacán River Valley  
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  2. Flora, Tehuacán Valley [by] C. Earle Smith, Jr.
    By: Smith, C. Earle
    Publication info: Chicago, Ill. :Chicago Natural History Museum,1965.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Botany  Mexico  Tehuacán River Valley  
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