1968 NASA Authorization: Hearings . . . Ninetieth Congress, First Session ...
Od autorů: United States. Congress. House. Committee on Science and Astronautics, United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Manned Space Flight, United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Space Science and Applications, United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Advanced Research and Technology