1 matching record(s)
file U (Stack)Cittert, P. H. van
"Oude hygrometers (Parts I, II, and III)"
offprints from De natuur, 50th year no. 12, December 15, 1930; 51st year no. 1, January 15, 1931; and 51st year no. 2, February 15, 1931.
[Unknown]
1931