http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
descriptive petrography of the igneous rocks
volumes : frontispiece (4 portrait) illustrations, tables, diagrams ; 25 cm.
v.1 Introduction, textures, classification and glossary.--v.2. The quartz-bearing rocks.--v.3. The intemediate rocks.--v.4. The feldspathoid rocks. The peridotites and perknites.