Photocopy of journal article from: Annals of the New York Academy of Sciences, v.200 (1972:Dec.29).
Book chapter. "Reprinted from: Pulmonary Reactions to Coal Dust: A Review of U.S. Experience, c1971, Academic Press, Inc., New York and London."
Journal article reprint from: Mining Congress Journal, 1965:Aug.
Journal article reprint from: Annals of the New York Academy of Sciences, v. 200 (1972:Dec.29).