Technical Notes National Advisory Committee For Aeronautics No. 390 A Method For Reducing The Temperature Of Exhaust Manifolds
Washington: 1931. First Edition. Softcover. 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. More