Vorträge über botanische stammesgeschichte, gehalten an der Reichsuniversität zu Leiden - Lotsy, Johannes Paulus, 1867 -1931 (G. Fischer, 1907)

Vorträge über botanische Stammesgeschichte, gehalten an der Reichsuniversität zu Leiden. Ein Lehrbuch der Pflanzensystematik - Lotsy, Johannes Paulus, 1867 -1931 (G. Fischer, 1907)

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

Un voyage à la mer polaire sur les navires de S.M.B. l'Alerte et la Découverte, (1875 à 1876) - Nares, George S. Sir (George Strong), 1831 -1915 (Hachette, 1880)

The W.A. Natorp Company, landscape, organization - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.A. Natorp Company, 1940)

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

Wagner Park flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nurseries, 1933)

Wagner park flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nursery Company, 1921)

Wagner park flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nurseries, 1920)

Wagner park flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nurseries, 1922)

Wagner Park flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nurseries, 1923)

Wagner Park flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nurseries, 1924)

Wagner Park Flowers [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nursery Co, 1916)

Wagner Park flowers [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nursery Co, 1917)

Wagner Park flowers [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nursery Co, 1918)

Wagner Park flowers [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nurseries, 1926)

Wagner Park flowers [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nurseries, 1925)

Wagner Park flowers [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nurseries, 1927)

Wagner's catalog of roses, shrubs, trees, hardy flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wagner Park Nursery Co, 1919)

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)