Certain natural associations of gold ...
Series: Contributions from the Geological Dept. of Columbia University -- Vol. XXI. no. 5; Contributions from the Geological Department of Columbia University -- Vol. XXI. no. 5
Published: 1911
Place of publication: Lancaster, Pa.]
Language: eng
Number of pages: 302
Subjects: Gold
Notes: Cover-title.

Vita.

"Reprinted from Economic geology, vol. VI, no. 3, April-May, 1911."

Thesis (PH.D.)--Columbia University.