Knowing and drawing trees / A. Hill : 1 Knowing and drawing trees / A. Hill : 2 Hilfsbuch der Museumsarbeit / G.R. Hille Der vaderen erf / door J.J. Moerman ; aquarellen van J.W. Heijting Formulas for stress and strain / Raymond J. Roark Indian Army Uniforms under the British from the 18th century to 1947 : cavalry / W.Y. Carman Chemical warfare / by Amos A. Fries and Clarence J. West evolution of fashion: pattern and cut from 1066 to 1930 / [by] Margot Hamilton Hill, [drawings], Peter A. Bucknell [text and patterns] Zeppelin in combat : a history of the German Naval Airship Division, 1912-1918 / by Douglas H. Robinson Radio engineering / by Frederick Emmons Terman Measurements in radio engineering / by Frederick Emmons Terman Communication engineering / by William Littell Everitt