Bulletin.

Vols. 21-30, 1850-59, called also 2d. series, v. 1-10; v. 31-61, 1860-1890, called also 3d. series, v. 1-31; v. 62-75, 1891-1904, called also 4th. series, v. 1-14.Mode of access: Internet.Vols. for 1830-70 issued by Société industrielle d'Angers et du département de Maine-et-Loire