1. Information regarding the Germicide and its protective influence Author(s): Pennsylvania Germicide Co., author. Publication: [Philadelphia?] : [publisher not identified], [1884?] Subject(s): Disinfection -- methodsZinc CompoundsToilet Facilities
2. Information regarding the Germicide and its protective influence Author(s): Pennsylvania Germicide Co., author. Publication: [Philadelphia?] : [publisher not identified], August, 1884 Subject(s): Disinfection -- methodsZinc CompoundsToilet Facilities