treaties and other international acts series Military assistance : agreement between the United States of America and Nicaragua Signal corps field manual : Signal corps operations Tactics instruction memorandum : Radio voice procedure for field artillery treaties and other international acts series Military mission to Nicaragua : agreement between the United States of America and Nicaragua Applied elasticity / by John Prescott Tele-communication engineers' instrument manual / by Paul H. Hunter Formulas for stress and strain / Raymond J. Roark Correspondence and reports Signal corps field manual : Signal corps troops radio amateur's handbook / by the Headquarters staff of the American Radio Relay League