Preliminary Revision Of The North American Species Of Echinocactus, Cereus, And Opuntia; Volume 3 (Paperback)
This important contribution to the study of North American cacti provides a detailed revision of the species of Echinocactus, Cereus, and Opuntia. The book includes descriptions, illustrations, and keys to aid in identification. A must-have for botanists and naturalists.
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