Penguin Books Ltd, Harmondsworth, Middlesex, England
Penguin Books Australia Ltd, Ringwood, Victoria, Australia
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First published under the title
Great Ideas and Theories of Modern Cosmology by Constable 1961
Revised edition published by Penguin Books 1970
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Copyright © Jagjit Singh, 1961, 1970
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Made and printed in Great Britain by
Hazell Watson & Viney Ltd,
Aylesbury, Bucks
Set in Monotype Times
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