title: [From the bibliographer's files (XXVIII). 50 years ago].
mesh_terms: D001634:Bibliographies as Topic; D049673:History, 20th Century; D009885:Ophthalmology / Q000266:history*; D011044:Poland
vernacular_title: Z teki szperacza-bibliografa (XXVIII). Przed 50 laty.