army air forces aviation psychology program research reports Printed classification tests / ed by J. P. Guilford vrije-tijdsbesteding van de frontsoldaat in WO I / Marcel Messiaen Honderd jaar Nederland, 1848-1948 / door W.L.M.E. van Leeuwen ; met een voorw. van G. Bolkestein America's strategy in world politics : the United States and the balance of power / Nicholas John Spykman ; maps by Richard Edes Harrison Radar : a report on science at war / released by The Joint Board on Scientific Information Policy for Office of Scientific Research and Development … Research and development board : history and functions évolution de la guerre / G. Marchand agardograph theory of high speed guns / by Arnold E. Seigel épisode de Dixmude : octobre-novembre 1914 / Ronarc'h marche vers la paix : discours prononcé au cercle international le 24 juilllet 1907 / H.W. van Asch van Wijck Since 1900 : a history of the United States in our times / Oscar Theodore Barck Jr. [and] Nelson Manfred Blake prs report Studies in visual acuity / prepared by the staff, personnel research section, the adjutant general's office