1 page, 8vo, integral autograph address leaf, small stain away from text, remnants of tipping on address leaf, seal hole expertly repaired." /> LAPLACE, Pierre Simon. Autograph letter signed ("Laplace") to Jean-Baptiste Biot (1774-1862), 30 germinal Year VII [19 April 1799]. <I>1 page, 8vo, integral autograph address leaf, small stain away from text, remnants of tipping on address leaf, seal hole expertly repaired</I>. | Christie's