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commissions
aperiodic crystals
crystallographic computing
crystallographic nomenclature
crystallographic teaching
crystallography in art and cultural heritage
electron crystallography
high pressure
inorganic and mineral structures
international tables
journals
mathematical and theoretical crystallography
powder diffraction
xafs

In April 1993 it was announced that the third Ewald Prize had been awarded to Professor N. Kato (Department of Physics, Meijo University, Nagoya, Japan) for his outstanding and profound contributions to the dynamical theory of X-ray diffraction of spherical waves by perfect crystals and slightly deformed (nearly perfect) crystals, for the experimental exploitation of these theories towards the characterization of the defect structure of single crystals and for his extraordinary achievements in X-ray diffraction topography.