c.2. First ed. (1889) published under title: Merck's index of fine chemicals and drugs for the materia medica and the arts; 2d ed. under title: Merck's 1896 index; 3d ed. under title: Merck's 1907 index; 4th ed. (1930), under title: Merck's index; 6th-7th ed. (1952-60), under title: The Merck index of chemicals and drugs.
