BEER, Gerog Joseph (1763-1821). Praktische Beobachtungen ber den grauen Staar und die Krankheiten der Hornhaut. Vienna: Christian Friedrich Wappler, 1791. 8o (198 x 123 mm). 3 engraved plates (2 hand-colored). (A few tears crossing text repaired). Old boards (worn). Provenance: Early signature on title-page; Lyon, Clinique ophtalmologique (stamp, and deaccession stamp dated 1934 on title). FIRST EDITION. NLM/Blake, p. 38; Wellcome II, p. 130.