Encyclopaedia Britannica (UK) Ltd

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Yearbook Science & the Future 1999 (Britannica Year Book of Science and the Future)

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2004 Britannica Book of the Year

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Britannica Medical and Health Annual 1993

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Britannica Medical and Health Annual 1992

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Britannica Medical and Health Annual 1997

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Britannica Medical and Health Annual 1999

Britannica Medical and Health Annual 1995

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Britannica Medical and Health Annual 1994

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Childrens Encyclopedia Brittanica

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By Laidler Keith J

Britannica Yearbook: 2001

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Britannica Book of the Year 2005

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