Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1880)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1883)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1884)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1896)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1912)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1904)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1903)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1913)

L'Oiseau et la Revue francaise d'ornithologie - Société ornithologique de France. (Société ornithologique de France, 1956)

Om Galapagos-hoarnes vegetation - Andersson, N. J. (Nils Johan), 1821 -1880 (Norstedt, 1857)

Om Westeråstrakten i botaniskt afseende - Troilius, Adolf Magnus, 1838 -1909 (Tryckt hos E. Westrell, 1860)

On molecular and microscopic science - Somerville, Mary Fairfax, 1780 -1872 (J. Murray, 1869)

On molecular and microscopic science - Somerville, Mary, 1780 -1872 (J. Murray, 1869)

One thousand objects for the microscope - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (F. Warne, 1869)

One thousand objects for the microscope - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Frederick Warne, 1869)

Onze flora. Beschrijving van de familiën, voornamste geslachten en soorten der in Nederland in het wild groeiende, verwilderde, verbouwde en aangeplante gewassen, alsmede van eenige fraaie en nuttige midden-europeesche planten - Hoffmann, Carl, 1802 -1883 (W.J. Thieme, 1900)

Opuscula Ichneumonologica : Fascicule 1-45 - Schmiedeknecht, Otto, 1847 -1936 ([s.n.], 1904)

Oregon flora newsletter - Oregon State University. Department of Botany; Plant Pathology. (Oregon Flora Project, Dept. of Botany & Plant Pathology, Oregon State University, 2001)

Oregon roses, perennials and rock plants, "the world's best" : fall 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Rose Nursery, Inc, 1936)

Oregon wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Clarice Nye, 1931)

Oregon wild flowers, rock plants and seeds, lilies, trees and shrubs, ferns, perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mrs. Clarice Nye, 1932)

Oregon wild flowers, rock plants and seeds, lilies, trees and shrubs, ferns, perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mrs. Clarice Nye, 1944)

Organographie der Pflanzen, insbesondere der Archegoniaten und Samenpflanzen - Goebel, K. (Karl), 1855 -1932 (G. Fischer, 1915)

The origin of a land flora : a theory based upon the facts of alternation - Bower, F. O. (Frederick Orpen), 1855 -1948 (Macmillan, 1908)

The origin of a land flora : a theory based upon the facts of alternation - Bower, F. O. (Frederick Orpen), 1855 -1948 (Macmillan and co., limited, 1908)

The origin of a land flora, a theory based upon the facts of alternation - Bower, F. O. (Frederick Orpen), 1855 -1948 (Macmillan and Co., Ltd, 1908)

The origin of the British flora - Reid, Clement, 1853 -1916 (Dulau, 1899)

Ornamental and fruit trees and shrubs. a guide to Southern horticulture ... 1918 catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal Palm Nurseries, 1918)

Ornamental plants for immediate effects : autumn 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1936)

Ornamental plants for immediate effects : for the autumn of 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gardens of the Blue Ridge, 1937)

Ornamental plants for immediate effects : price list for spring 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1939)

Ornamental plants for immediate effects : spring 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1937)

Ornamental plants : special May offer of rare and choice nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1939)

Ornamental trees, evergreens, shrubs, perennials and rock garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Van's Nursery and Landscape Service, 1947)

Ornamental trees, evergreens, shrubs, perennials and rock garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Van's Nursery and Landscape Service, 1941)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1910)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1912)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1913)

Our ferns in their haunts; a guide to all the native species - Clute, Willard Nelson, 1869 -1950 (F. A. Stokes Co, 1901)

Our ferns in their haunts a guide to all the native species - Clute, Willard Nelson, 1869 -1950 (W. Briggs, 1901)

Our ferns in their haunts; a guide to all the native species - Clute, Willard Nelson, 1869 -1950 (W. Briggs, 1901)

Our ferns in their haunts, a guide to all the native species - Clute, Willard Nelson, 1869 -1950 (Stokes, 1901)

Our native ferns and how to study them; with synoptical descriptions of the North American species - Underwood, Lucien Marcus, 1853 -1907 ([Leader Publishing Co., Printers], 1881)

Our native ferns and their alies : with synoptical descriptions of the American Pteridophyta north of Mexico - Underwood, Lucien Marcus, 1853 -1907 (H. Holt, 1896)

Our native ferns and their allies : with synoptical descriptions of the American pteridophyta north of Mexico - Underwood, Lucien Marcus, 1853 -1907 (Henry Holt and company, 1888)

Our native ferns and their allies : with synoptical descriptions of the American Pteridophyta north of Mexico - Underwood, Lucien Marcus, 1853 -1907 (H. Holt, 1896)

Our native ferns and their allies : with synoptical descriptions of the American Pteridophyta north of Mexico - Underwood, Lucien Marcus, 1853 -1907 (Leader Pub. Co, 1881)

Our native ferns and their allies; with synoptical descriptions of the American Pteridophyta north of Mexico - Underwood, Lucien Marcus, 1853 -1907 (H. Holt, 1900)

Our native ferns and their allies; with synoptical descriptions of the American "Pteridophyta" north of Mexico - Underwood, Lucien Marcus, 1853 -1907 (Holt, 1888)

Our native ferns and their allies; with synoptical descriptions of the American Pteridophyta north of Mexico - Underwood, Lucien Marcus, 1853 -1907 (H. Holt and company, 1888)

Our native ferns and their allies; with synoptical descriptions of the American Pteridophyta north of Mexico - Underwood, Lucien Marcus, 1853 -1907 (H.Holt, 1900)

Our native ferns and their allies with synoptical descriptions of the American pteridophyta north of Mexico - Underwood, Lucien Marcus, 1853 -1907 (H. Holt, 1900)

Our native ferns, or, A history of the British species and their varieties / by E.J. Lowe - Lowe, E. J. (Edward Joseph), 1825 -1900 (G. Bell & Sons, 1874)