International
Tables for
Crystallography
Volume C
Mathematical, physical and chemical tables
Edited by E. Prince

International Tables for Crystallography (2006). Vol. C. ch. 7.1, p. 627

Figure 7.1.6.3 

U. W. Arndtb
[Figure 7.1.6.3]
Figure 7.1.6.3

Spherical drift chamber multiwire proportional chamber (MWPC) (Charpak, 1982[link]; courtesy of G. Charpak).