Periodicals, **2.126.1 Academia scientarum imperialis, Petropolitana, Commentarii, J, 1-14, 1726-1746. Petropoli: 1728-1751. 14 v. Plates. 4°, -- -Novi commentarii. J. 1-20. 1747-75. Petropoli. 1750-76. 20 v. in 21. Plates. 4°. **E,126.1 -- -Acta, 1777-1782. Petropoli, 1778-1786. 12v. Plates. 4°, ve ol&6s1 ( Continued)