Greenberg, Joel S., ed. Space economics /ed. by Joel S. Greenberg, Henry R. Hertzfeld - Washington, D.C AIAA 1992 - xv, 446p incl. bibl. - Progress in Astronautics and Aeronautics. V.144 . ISBN: 156347042X Dewey Class. No.: 629.1 / N60.144 "SER"