This article is the concluding section of a two--part article. The first half, published in the February 1965 Journal included a discussion of earth processes and minerals.
Iowa Science Teachers' Journal
© Copyright 1965 by the Iowa Academy of Science
Roy, Chalmer J.
"Earth Materials Processes History, Part II,"
Iowa Science Teachers Journal: Vol. 2
, Article 7.
Available at: https://scholarworks.uni.edu/istj/vol2/iss4/7