The Merck index
Subtitle: an encyclopedia for the chemist, pharmacist and physician, dentist and veterinarian
By: compiled and published by Merck & co., inc.
Edition: 5th ed.
Publisher: Merck & Co.
Published: 1940
Place of publication: Rahway, N.J; New York [etc.]
Language: eng
Number of pages: 1060
Subjects: Materia medica.; Drugs.
Description: Half-life is listed for radioactive isotopes.

Monographs include references to literature and patents.

A table of the International System of Units (SI) is included.

Alchemical symbols used in biology and botany are listed.
Notes: Table on lining-paper.
Previous editions published under title: Merck's index.