Abstract

<h2>Acta Crystallographica Section A</h2><h3>Crystal Physics, Diffraction, Theoretical and General Crystallography</h3><h3>0567-7394</h3> <h2>notes and news</h2> Volume 31 Part 1 Page 160 January 1975 <h2>Notes and News</h2> 160 NOTES AND NEWS Notes and News Announcements and other items of crystallographic interest will be published under this heading at the discretion of the Editorial Board. The notes (in duplicate) should be sent to the Executive Secretary of the International Union of Crystallography (J. N. King, International Union of Crystallography, 13 White Friars, Chester CH1 1NZ, England). Molecular Structures and Dimensions Volume 5 of this series: Bibliography 1972-73, Organic and Organometallic Crystal Structures, was published recently by the International Union of Crystallography and the Cambridge Crystallographic Data Centre. This volume contains information on approximately 2000 structures pub- lished during 1972-73. Entries are arranged in 86 chemical classes and cover organic compounds, complexes, and or- ganometallic compounds. There are three indexes: author, formula and transition metal. All are cumulative for the years 1935-1973 and give references to Volumes 1-5. Volume 6 for 1973-74 is in preparation and is due to appear early in 1975. A new numerical data volume for the years 1966--69, to follow Volume A1, Interatomic Distances 1960- 65, which was published