Published by The National Aeronautics and Space Administration (NASA), Washington, D.C., 1973
Seller: Tiber Books, Cockeysville, MD, U.S.A.
Paperback. Condition: Very Good. 4to, paperback. Vg+ condition. Binding tight, contents clean. Several illustrations and graphs. 312 pp. Institutional stamp on cover.
Published by Ivan Humprheys, 1945
Seller: Black Rock Books, St Michael, Barbados
Hardcover. Condition: Fair. With special application to the Culbertson System. Humphreys was a Master Player and held the Culbertson Master Teacher's Diploma. Book is tanned, stained, crushed at top of spine and shows age and wear. Complete and binding sound. Previous owner's name on fep.