Descriptive catalogue of a petrographic collection of American rocks /
by R.W. Clark.
APA Citation
Clark, R. Watson., Ward's natural history establishment, R. (1916). Descriptive catalogue of a petrographic collection of American rocks. Rochester, New York: Ward's Natural Science Establishment.
MLA Citation
Clark, Robert Watson, b. 1884, and Rochester Ward's natural history establishment. Descriptive Catalogue of a Petrographic Collection of American Rocks. Rochester, New York: Ward's Natural Science Establishment, 1916.
Warning: These citations may not always be complete (especially for serials).