Editore: School of Geoscience, Louisiana State University., 1970
Da: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condizione: Very Good. ORIGINAL Articles, disbound from journal; no covers; in very good condition. Journal.
Editore: Science Museum of the Saint Paul Institute,, Saint Paul, Minnesota, 1959
Da: Cambridge Books, Cambridge, MN, U.S.A.
Prima edizione
Soft cover. Condizione: Very Good. 1st Edition. i, 13 pages, 2 unnumbered leaves of plates : illustrations ; 28 cm. Science bulletin (Science Museum of Minnesota), no. 3, pt. 4. Some slight wear and a small discolored spot on the front cover.
Da: Terrace Horticultural Books, St. Paul, MN, U.S.A.
Soft cover. Condizione: Very Good. B & W Photos (illustratore). Copyright Date: 1970 Sm Quarto, B & W Photos, PP.867-873, Reprinted From American Journal Of Botany.