Table of Contents

PART 1: SPACE GROUPS AND THEIR SUBGROUPS: Historical introduction.- General introduction to the subgroups of space groups .- Remarks on Wyckoff positions.- Computer checking of the subgroup data.- The mathematical background of the subgroup tables.-PART 2: MAXIMAL SUBGROUPS OF THE PLANE GROUPS AND SPACE GROUPS: Guide to the subgroup tables and graphs.- Tables of maximal subgroups of the plane groups Tables of maximal subgroups of the space groups.- Graphs for translationengleiche subgroups.- Graphs for klassengleiche subgroups (V.) PART 3: RELATIONS BETWEEN THE WYCKOFF POSITIONS: Guide to the tables.- Tables of the relations of the Wyckoff positions .-Appendix.- Differences in the presentation of Parts 2 and 3).-References.-Subject index