Details
Die Windkanale in Langley Field,
1941 text, a pamphlet; The Use of the Wind Tunnel in Connection With Aircraft Design Problems, English text, diagrams, a pamphlet; Heinkel Baubeschreibung DSB 162, original factory copy, text in photographed type, fold-out diagrams, Vienna 15/10/44 and five others of aeronautical interest (8)
1941 text, a pamphlet; The Use of the Wind Tunnel in Connection With Aircraft Design Problems, English text, diagrams, a pamphlet; Heinkel Baubeschreibung DSB 162, original factory copy, text in photographed type, fold-out diagrams, Vienna 15/10/44 and five others of aeronautical interest (8)