A descriptive petrography of the igneous rocks : vol. 4, Part-1 : The feldspathoid rocks. Part-2 : The peridotites and perknites / Albert Johannsen. Johannsen, Albert, 1871-1962. Igneous rocks. Petrology. Rocks Classification. QE461 .J6 552.1 JOD Includes bibliographical references and index. Chicago : University of Chicago Press, 1938. 1938. 1931 Text 4 v. : eng