Space groups and their descriptions in International Tables for Crystallography (source code)

= Space groups and their descriptions in International Tables for Crystallography
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https://onlinelibrary.wiley.com/iucr/itc/Ac/ch1o4v0001/sec1o4o4/

VolumeA, chapter1.4, section1.4.4: Wyckoff-position descriptions and letter convention, beginning with a for maximal site-symmetry order and ending with the general position. Companion primary table https://onlinelibrary.wiley.com/iucr/itc/Ac/ch3o4v0001/ , Table3.4.3.3, gives P1 general position1a.