Fries, Sylvia Doughty. creator text dcu Washington National Aeronautics and Space Administration 1992 monographic eng xx, 216, [6] p. 25 cm. general Sylvia Doughty Fries. Includes bibliographies and index. United States National Aeronautics and Space Administration Officials and employees Biography Project Apollo U.S. Aeronautical engineers United States Biography 90-39761 0160361745 doc92000909 920610 20160527192521.0 66117