- Merck's index - Primary Source Edition
- Chemical reagents, their purity and tests; a new and improved text based on and replacing the latest edition of Krauch's "Die prüfung der chemischen reagentien auf reinheit,"
- Merck's Reagentien-Verzeichnis, Enthaltend Die Gebrauchlichen Reagentien Und Reactionen, Geordnet Nach Autornamen
- Merck's index of fine chemicals and drugs for the materia medica and the arts: comprising a summary of whatever chemical products are to-day adjudged ... values and synonyms affixed; a guide for
- Merck's index