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The radio universe
by
Roy Worvill
Kahn and Averill, Orbiting Book Service, 1977
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Stars and telescopes for the beginner
by
Roy Worvill
Taplinger Pub. Co., 1979
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Night skies of the year
by
Roy Worvill
Kahn & Averill, 1968
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Telescope making for beginners.
by
Roy Worvill
Orbiting Book Service, 1974
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The Stars and Their Legends
by
Roy Worvill
Ladybird Books Ltd, June 1, 1973
Hardcover
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Telescope & Microscope (How It Works)
by
Roy Worvill
Ladybird Books, June 1987
Hardcover
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Telescope Making for Beginners
by
Roy Worvill
Hyperion Books, December 1984
Hardcover
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Exploring Space (Ladybird 'Achievements' Book)
by
Roy Worvill
Merry Thoughts Inc., January 1984
Hardcover
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Time Calendars and Clocks (Achievements)
by
Roy Worvill
Ladybird Books Ltd, February 1, 1973
Paperback
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The Radio Universe
by
Roy Worvill
Kahn & Averill, November 1977
Paperback
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Sky and stars
by
Roy Worvill
Ward,Lock, 1965
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Archwilio'r gofod
by
Roy Worvill
Wills & Hepworth, 1971
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