1‎.‎ Materials and materials properties‎;‎ 2‎.‎ The periodic table and bonds‎;‎ 3‎.‎ What is a crystal structure‎?‎‎;‎ 4‎.‎ Crystallographic computations‎;‎ 5‎.‎ Lattice planes‎;‎ 6‎.‎ Reciprocal space‎;‎ 7‎.‎ Additional crystallographic computations‎;‎ 8‎.‎ Symmetry in crystallography‎;‎ 9‎.‎ Point groups‎;‎ 10‎.‎ Plane groups and space groups‎;‎ 11‎.‎ X‎-ray diffraction‎:‎ geometry‎;‎ 12‎.‎ X‎-ray diffraction‎:‎ intensities‎;‎ 13‎.‎ Other diffraction techniques‎;‎ 14‎.‎ About crystal structures and diffraction patterns‎;‎ 15‎.‎ Non‎-crystallographic point groups‎;‎ 16‎.‎ Periodic and aperiodic things‎;‎ 17‎.‎ Metallic structures I‎;‎ 18‎.‎ Metallic structures II‎;‎ 19‎.‎ Metallic structures III‎:‎ quasicrystals‎;‎ 20‎.‎ Metallic structures IV‎:‎ amorphous metals‎;‎ 21‎.‎ Ceramic structures I‎;‎ 22‎.‎ Ceramic structures II‎:‎ high temperature superconductors‎;‎ 23‎.‎ Ceramic structures III‎:‎ terrestrial and extraterrestrial minerals‎;‎ 24‎.‎ Molecular solids and biological materials‎.‎