Crop yields and climate change to the year 2000 :
report on the second phase of a climate impact assessment /
conducted by the Research Directorate of the National Defense University, jointly with the U.S. Department of Agriculture ... [et al.].

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Item Link Original Source
Full view   v.1 University of Michigan
Full view   v.1 University of Illinois at Urbana-Champaign
Full view   v.1* (1980) University of Minnesota
Full view   v.2 University of Michigan
Full view   v.2 University of Illinois at Urbana-Champaign
Full view   v.2* (1986) University of Minnesota