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1984 Science and The Future Yearbook
by
David Calhoun
Encyclopaedia Britannica, Inc., 1984
Hardcover
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Yearbook of Science and the Future
by
David Calhoun
Encyclopaedia Britannica (UK) Ltd, November 30, 1990
Hardcover
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Yearbook of Science and the Future
by
David Calhoun
Encyclopaedia Britannica (UK) Ltd, November 30, 1991
Hardcover
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Cruising the San Juan Islands
by
David Calhoun
Weatherly Press, June 1991
Paperback
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Britannica yearbook of science and the future 1989
by
David Calhoun
Encyclopaedia Britannica, 1988
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