Author: Clay, J.
Title: Kosmische stralen in de atmosfeer en in de aarde [Ned. T. Natuurk. 6, 194-220, 1939]
Description: Den Haag, Nijhoff, 1939. 28 pp. reprint w. ills (figs) in the text. Or. prtd wrappers. 150gram.

Keywords: studieboeken