Crystallography 200 X-ray crystallography 42 Physics 16 Chemistry 14 Crystallography, Mathematical 14 Mineralogy 14 Crystals 13 Solid state physics 9 X-rays 7 Crystal growth 6 Diffraction 6 Petrology 6 Dissertations, Academic (Ph.D) 5 Symmetry (Physics) 5 Chemical bonds 4 Crystal lattices 4 Materials science 4 Molecules 4 Quantum chemistry 4 Solid state chemistry 4 Solids 4 crystallography 4 Antibiotics 3 Cholestrol 3 Collections 3 Congresses 3 Crystal Symmetry 3 Crystal optics 3 Crystal structure 3 Insulin 3