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		No cover image available Flora of Colorado, by P.A. Rydberg, Ph. D. by Rydberg, Per Axel, 1860-1931 Series: Bulletin (Colorado Agricultural Experiment Station) ; 100. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Fort Collins, Experiment Station, 1906 Availability: Items available for loan: Nash Library (1)Call number: QK150.R98 1906.
		No cover image available Flora of the southeastern United States; being descriptions of the seed-plants, ferns and fern-allies growing naturally in North Carolina, South Carolina, Georgia, Florida, Tennessee, Alabama, Mississippi, Arkansas, Louisiana, and in Oklahoma and Texas east of the one hundredth meridian, by John Kunkel Small. by Small, John Kunkel, 1869-1938 Rydberg, Per Axel, 1860-1931 Edition: 2d ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: New York, The author, 1913 Availability: Items available for loan: Nash Library (1)Call number: QK125.S63 1913.
		No cover image available A report upon the grasses and forage plants of the Rocky Mountain region / by P.A. Rydberg and C.L. Shear. by Rydberg, Per Axel, 1860-1931 Shear, C. L. (Cornelius Lott), 1865-1956 Series: Bulletin (United States. Division of Agrostology) ; no. 5. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, D.C. : U.S. Dept. of Agriculture, Division of Agrostology, 1897 Availability: Items available for reference: Nash Library: Not for loan (1)Call number: QK139.R93 1897 ARCHIVES.
		No cover image available Flora of the Rocky mountains and adjacent plains, Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, North Dakota, and British Columbia, by P.A. Rydberg. by Rydberg, Per Axel, 1860-1931 Edition: 2d ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: New York, Hafner, 1954 Availability: Items available for loan: Nash Library (1)Call number: QK139.R9 1954.
		No cover image available Flora of the prairies and plains of central North America, by Per Axel Rydberg ... by Rydberg, Per Axel, 1860-1931 Howe, Marshall Avery, 1867- Material type: Text; Literary form: Not fiction Publication details: New York, The New York Botanical Garden, 1932 Availability: Items available for loan: Nash Library (1)Call number: QK110.R8.