Hearing before the Committee on Interior and Insular Affairs, United States Senate and the Committee on Science and Astronautics, U.S. House of Representatives, Ninetieth Congress, second session. July 17, 1968
Publisher: U.S. Govt. Print. Off.
Published: 1968
Place of publication: Washington
Language: eng
Number of pages: 233
Notes: "[No. 8]"

Bibliographical footnotes.