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. 70

Figure 1.4.5.2 

B. Souvignierd
[Figure 1.4.5.2]
Figure 1.4.5.2

Symmetry-element diagrams for the space group [Pmn2_1] (31) for orthogonal projections along [100] (left), [010] (middle) and [001] (right).