A key for the determination of rock-forming minerals in thin sections,
by Albert Johannsen.

APA Citation

Johannsen, A. (1908). A key for the determination of rock-forming minerals in thin sections. New York: J. Wiley & sons.

MLA Citation

Johannsen, Albert, 1874-. A Key for the Determination of Rock-forming Minerals In Thin Sections. New York: J. Wiley & sons, 1908.

Warning: These citations may not always be complete (especially for serials).