Wagtendonk, W.J. Principles of helicopter flight W.J. Wagtendonk - Washington Aviation Supplies & Adademics 2004 - xii, 275 p. Includes glossary. ISBN: 9781560272175 Subjects--Topical Terms: Helicopters-Piloting Helicopters-Aeronautics Dewey Class. No.: 629.13252 / WAG