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 Results for DC.creator="H." AND DC.creator="Wondratschek" in section 1.2.5 of volume A1
Crystal systems and crystal families
Wondratschek, H.  International Tables for Crystallography (2011). Vol. A1, Section 1.2.5.5, pp. 17-18 [ doi:10.1107/97809553602060000791 ]
... crystal class C of a space group is either holohedral H or it can be assigned uniquely to H by the condition: any point group of C is a subgroup of a point group of H but not a subgroup of a holohedral crystal class ...

Point groups and crystal classes
Wondratschek, H.  International Tables for Crystallography (2011). Vol. A1, Section 1.2.5.4, pp. 16-17 [ doi:10.1107/97809553602060000791 ]
Point groups and crystal classes 1.2.5.4. Point groups and crystal classes If the point coordinates are mapped by an isometry and its matrix-column pair, the vector coefficients are mapped by the linear part, i.e. by the matrix alone, cf. Section 1.2.2.6. Because the number of its elements is infinite, a ...

Space groups and space-group types
Wondratschek, H.  International Tables for Crystallography (2011). Vol. A1, Section 1.2.5.3, pp. 15-16 [ doi:10.1107/97809553602060000791 ]
Space groups and space-group types 1.2.5.3. Space groups and space-group types We first consider the classification of the space groups into types. A more detailed treatment may be found in Section 8.2.1 of IT A. In practice, a common way is to look for the symmetry of the space ...

Classifications of space groups
Wondratschek, H.  International Tables for Crystallography (2011). Vol. A1, Section 1.2.5.2, p. 15 [ doi:10.1107/97809553602060000791 ]
... A or to Brown et al. (1978). References Brown, H., Bülow, R., Neubüser, J., Wondratschek, H. & Zassenhaus, H. (1978). Crystallographic Groups of Four-dimensional ...

Space groups and their description
Wondratschek, H.  International Tables for Crystallography (2011). Vol. A1, Section 1.2.5.1, pp. 14-15 [ doi:10.1107/97809553602060000791 ]
Space groups and their description 1.2.5.1. Space groups and their description The set of all symmetry operations of a three-dimensional crystal pattern, i.e. its symmetry group, is the space group of this crystal pattern. In a plane, the symmetry group of a two-dimensional crystal pattern is its plane group. ...

Space groups
Wondratschek, H.  International Tables for Crystallography (2011). Vol. A1, Section 1.2.5, pp. 14-18 [ doi:10.1107/97809553602060000791 ]
... crystal class C of a space group is either holohedral H or it can be assigned uniquely to H by the condition: any point group of C is a subgroup of a point group of H but not a subgroup of a holohedral crystal class ...

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