onr-5 Materials research in the navy : a symposium sponsored by the Office of Naval Research, March 17, 18, and 19, 1959, the Benjamin Franklin Hotel, … "Ike" Eisenhower / door Karel H.M. van den Berg ; woord vooraf van Z.K.H. Prins Bernhard Eisenhower : mens en symbool / [door] John Gunther ; geaut. vert. van M. Mok