Publicado por Washington, 1931
Librería: Willis Monie-Books, ABAA, Cooperstown, NY, Estados Unidos de America
Original o primera edición
Softcover. First Edition. Complete in original wrapper; mimeo format, stapled (staples may show some rust) ; cover may have some light soiling or staining. Upper corner of cover has presentation stamp from the Committee. Presents results of tests done at the Langley Memorial Aeronautical Laboratory.