Mars and Earth
Subtitle: one of a series of NASA Facts about the exploration of Mars
Series: NASA facts ; NF-61
Publisher: U.S. National Aeronautics and Space Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1975
Place of publication: Washington
Language: eng
Subjects: Mars (Planet) -- Exploration
Notes: Cover title

S/N 033-000-00621-7

Includes list of selected readings