Botting, Douglas
Humbuldt and the cosmos
Harper & Row, 1973
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Strathern, Paul
Einstein & relativitas
Jakarta : Erlangga, 2003,
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Beckhard, Arthur
Albert Einstein
G.P. Putnam`s Sons, 1959
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Pasachoff, Jay M.
The cosmos : astronomy in the new millennium
Thomson, 2001
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Tuzet, Helene
Le Cosmos et L'imagination
Libraire Jose Corti, 1998
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