The origin of a land flora, a theory based upon the facts of alternation Bower, F. O. (Frederick Orpen), 1855-1948 creator text book London Macmillan and co., limited 1908 1908
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ENG Evolution Generations, Alternating Phylogeny Plants QK980 .B6 https://www.biodiversitylibrary.org/bibliography/1698 3440410 08019077 10.5962/bhl.title.1698 DLC/ICU