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- catalog contributor b13102268.
 - catalog contributor b13102269.
 - catalog created "[1968]".
 - catalog date "1968".
 - catalog date "[1968]".
 - catalog dateCopyrighted "[1968]".
 - catalog description "Includes bibliographical references.".
 - catalog extent "1 v. (various pagings) :".
 - catalog issued "1968".
 - catalog issued "[1968]".
 - catalog language "eng".
 - catalog publisher "Lexington, Mass. : ITEK Corporation, Optical Systems Division,".
 - catalog subject "Astronautics in astronomy.".
 - catalog subject "Astronomical instruments.".
 - catalog subject "Orbiting astronomical observatories.".
 - catalog subject "Telescopes.".
 - catalog title "Study of telescope maintenance and updating in orbit.".
 - catalog type "text".