Space in the 21st century /
Lewis, Richard S.
Space in the 21st century / Richard s. Lewis. - New York, NY : Columbia University Press, c1990. - 234 p. : ill. ; 29 cm.
Includes bibliographical references and index.
0231063040
Outer space--Exploration.
Space colonies.
Space in the 21st century / Richard s. Lewis. - New York, NY : Columbia University Press, c1990. - 234 p. : ill. ; 29 cm.
Includes bibliographical references and index.
0231063040
Outer space--Exploration.
Space colonies.