International
Tables for
Crystallography
Volume A
Space-group symmetry
Edited by M. I. Aroyo

International Tables for Crystallography (2015). Vol. A, ch. 1.4, p. 65

Figure 1.4.4.4 

B. Souvignierd
[Figure 1.4.4.4]
Figure 1.4.4.4

Symmetry-element diagrams for the space group [P222_1] (17) for orthogonal projections along [001], [010], [100] (left to right).