Emmons, S. F., Becker, G. F. 1., Pošepný, F., Irving, J. D. 1., Smith, H. D., & Ferguson, H. G. 1. (1913). Ore-deposits: A sequel to the 2d ed. of "The genesis of ore-deposits," by Franz Posepny and others. New York: The Institute.

Emmons, Samuel Franklin, George F. 1847-1919 Becker, František Pošepný, J. D. 1874-1918 Irving, H. DeWitt Smith, and Henry G. 1882-1966 Ferguson. Ore-deposits: A Sequel to the 2d Ed. of "The Genesis of Ore-deposits," By Franz Posepny and Others. New York: The Institute, 1913.

Emmons, Samuel Franklin, et al. Ore-deposits: A Sequel to the 2d Ed. of "The Genesis of Ore-deposits," By Franz Posepny and Others. New York: The Institute, 1913.