Porphyry of the Porcupine district, Ontario
By: by James Eric Lloyd Evans ...
Series: Contributions from the Department of geology, Columbia university,; v.59, no. 4
Published: 1944
Place of publication: [n.p
Language: eng
Number of pages: 1141
Subjects: Porphyry.; Geology -- Ontario -- Porcupine district.
Notes: "References cited": p. 1136.
Thesis (PH. D.)--Columbia university, 1944.
"Reprinted from the Bulletin of the Geological society of America, vol. 55 ... (1944)"
Vita.
Cover-title.