Author: RIDGE (John Drew)

Description

c9I• :c Ridge (John Drew). The Genesis of the tn—state zino and. lead. ores: a. part o± a dissertation submitted to (the University of Chicago)...in candidacy for the degree of 1)ootor of Philosophy... 1935. Ieprinted from Economic Geology, Vol. I, No. 3, 1936. p. (3) ÷ 298-313. Diagram and table. 0 8 . Chicago, 1936.

Card ID: 116