Vorträge über botanische Stammesgeschichte, gehalten an der Reichsuniversität zu Leiden. Ein Lehrbuch der Pflanzensystematik - Lotsy, Johannes Paulus, 1867 -1931 (G. Fischer, 1911)

W. R. Strong & Co.'s catalogue of seeds, trees, etc., for 1886 : containing select lists and descriptions of fresh and genuine vegetable, flower, grass and other field seeds, fruit and ornamental trees and other nursery stock, bulbous roots, plants, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W. R. Strong & Co, 1886)

The W.A. Natorp Company, landscape, organization - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.A. Natorp Company, 1941)

The W.A. Natorp Company, landscape, organization : catalogue 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.A. Natorp Company, 1935)

Wagner flowers : special selections for spring 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nurseries, 1932)

Wagner's descriptive catalog [of] fruit and ornamental trees and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Nurseries, 1931)

Der wald - Rossmässler, E. A. (Emil Adolf), 1806 -1867 (C. F. Winter, 1863)

Waldbau auf naturgesetzlicher Grundlage. Ein Lehr- und Handbuch - Mayr, Heinrich. (P. Parey, 1909)

Waldbau auf naturgesetzlicher Grundlange : Ein Lehr- und Handbuch - Mayr, Heinrich. (P. Parey, 1909)

Der Waldbau nach wissenschaftlicher Forschung und praktischer Erfahrung; ein Hand- und Lehrbuch - Bühler, Anton, 1848 -1920 (E. Ulmer, 1918)

Die Waldungen von Nordamerika: ihre Holzarten, deren Anbaufähigkeit und forstlicher Werth für Europa im Allgemeinen und Deutschland insbesonders. Nach im Auftrage des Kgl. Bayerischen Staatsministeriums der Finanzen unternommenen Reisen und Studien - Mayr, Heinrich. (M. Rieger, 1890)

Washburn & Co.'s amateur cultivator's guide to the flower & kitchen garden - Washburn & Co. (The Company, 1876)

Washburn & Co.'s amateur cultivator's guide to the flower and kitchen garden - Washburn & Co. (The Company, 1870)

Washburn & Co.'s amateur cultivator's guide to the flower and kitchen garden : containing a descriptive list of two thousand varieties of flower and vegetable seeds : also a list of French hybrid gladiolus, raised and imported by Washburn and Company, Seed Merchants - Washburn & Co. (The Company, 1869)

Washburn & Co.'s amateur cultivator's guide to the flower and kitchen garden : containing a descriptive list of two thousand varieties of flower and vegetable seeds : also a list of French hybrid gladiolus - Washburn & Co. (The Company, 1869)

Washington Park Arboretum bulletin - University of Washington. (Published by the Arboretum Foundation for the University of Washington, 1986)

Washington Park Arboretum bulletin - University of Washington. (Published by the Arboretum Foundation for the University of Washington, 1988)

Washington Park Arboretum bulletin - University of Washington. (Published by the Arboretum Foundation for the University of Washington, 2000)

Washington Park Arboretum bulletin - University of Washington. (Published by the Arboretum Foundation for the University of Washington, 2001)

Washington Park Arboretum bulletin - University of Washington. (Published by the Arboretum Foundation for the University of Washington, 2003)

Washington Park Arboretum bulletin - University of Washington. (Published by the Arboretum Foundation for the University of Washington, 2017)

Water lilies, aquatic plants, fishes and aquariums : plants for the rock garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Buskirk's Aquarium, 1933)

Water relations and forest distribution in the Douglas-fir region on Vancouver Island - McMinn, R. G. (Forest Biology Division, Canada Dept. of Agriculture, 1961)

Water utilization by trees, with special reference to the economic forest species of the north temperate zone - Raber, Oran, 1893 -1940 (U.S. Dept. of Agriculture, 1937)

Waterer's seeds, bulbs and plants : 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hosea Waterer, 1928)

Waterer's seeds, bulbs and plants, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hosea Waterer, 1929)

Waterer's seeds, bulbs and plants : 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hosea Waterer, 1930)

Waterer's seeds, bulbs and plants, 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hosea Waterer, 1931)

Watkins Nurseries, J.B. Watkins & Bro. owners : 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Watkins Nurseries, 1937)

Watkins Nurseries, J.B. Watkins & Bro. owners : fiftieth anniversary, 1886-1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Watkins Nurseries, 1936)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1982)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2008)

Waukegan Nurseries Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (R. Douglas' Sons, 1932)

Waukegan Nurseries (Incorporated) : season 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waukegan Nurseries (Incorporated), 1930)

Waukegan Nurseries, season 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (R. Douglas' Sons, 1929)