301,609 OPHTHALMOLOGY Ophtraology sourcebook and reference guide 1991-1992 / [ed.-in chief Paul R. Lichter. - 2 nd ed./. -[Philadelphia : J. B. Lippincott Co., 1991]. - XXVIII, [2], 157 s. ; 29 cm (Ophtalmology, ISSN 0161-6420 ; 1991, suppl.)