Proceedings of the seventh annual Working Group on Extraterrestrial Resources
Subtitle: a meeting held at Denver, Colorado, June 17-18, 1969.
Series: NASA SP ;; -229
Publisher: Scientific and Technical Information Division, Office of Technology Utilization, National Aeronautics and Space Administration; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1970
Place of publication: Washington
Language: eng
Number of pages: 144