by George D. Woods ; presented before the Committee on Science and Astronautics, U.S. House of Representatives at its ninth meeting with the Panel on Science and Technology, January 23-25, 1968, at Washington, D.CU.S. G.P.O.1968
by George D. Woods ; presented to the Committee on Science and Astronautics, U.S. House of Representatives, Ninetieth Congress, second sessionGreenwood Press[19--]