http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Colorimetric methods of analysis, including some turbidimetric and nephelometric methods
v. 1. Theory, instruments, pH. --v. 3-4. Organic.
by Foster Dee Snell and Cornelia T. Snell.
First published in 1921 under title: Colorimetric analysis.
Reprint of the 3d ed. published by Van Nostrand, New York.