ENGLEMANN PRICKLEY PEAR CACTUS GROWING OUTSIDE A SOLAR HEATED GREENHOUSE AT THE UNIVERSITY OF ARIZONA ENVIRONMENTAL 555370

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Photo credit: © nsf / Alamy / Afripics
License: Licensed
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Keywords: 555370, archives, arizona, bygone, cactus, englemann, environmental, greenhouse, growing, heated, historic, history, pear, prickley, solar, university, usa, vintage