Proceedings of the Seventh Annual Working Group on Extraterrestrial Resources By Books / Paperback Transportation › Spaceflight Publisher: National Aeronautics And Space Administration, January 1970 Price $37.95 Free Shipping Send to a friend Used - Good Good condition. (NASA, Space Flight) A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains. Bundled media such as CDs, DVDs, floppy disks or access codes may not be included. $37.95 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.