Mathematics. Correspondence.
Leibnitz, Gottfried Wilhelm, Freiherr von, and Bernouilli, Jean. Commercium philosophicum et mathematicum, Lausannae: sumpt. Marci-Michaelis ppousquet. MDCCXLV. 2 v. 23 folded plates. 4°. **5020a .68 Same. Lausannée: sumpt. Marci-Michaelis Bousquet. MDCCXLV. 2 v. in 1. Portr. 23 folded plates. 4°. 3912 3