Contents:

• B. H. Toby, R. L. Harlow, and M. A. Holomany - The POWDER SUITE: Computer Programs for Searching and Accessing the JCPDS-ICDD Powder Diffraction Database (2)
• D. P. Matheis and R. L. Snyder - The Crystal Structures and Powder Diffraction Patterns of the Bismuth and Thallium Ruddlesden-Popper Oxide Semiconductors (8)
• W. Wong-Ng et al. - Crystal Chemistry and Phase Equilibria Studies of the BaO(BaCO₃)^-l/2R₂O₃-CuO Systems III: X-Ray Powder Characterization and Diffraction Patterns of the Ba₃R₃Cu₆O_14+x, R = Lanthanides (26)
• M. Kato et al. - Identification and Quantification of Unknown Component Phases in Powder Samples by X-Ray Diffractometry (33)
• M. E. Bowden and C. M. Cardile - Structures of Orthorhombic and Cubic Dicadmium Stannate by Rietveld Refinement (36)
• A. Ratuszna and K Majewska - Studies of Distortion in Potassium Manganese Fluoride, KMnF₃, at 10K: an Example of Powder Profile Analysis Using the Pearson Type VII Distribution (41)
• D. L. Wertz - Mass Absorption Corrected X-Ray Powder Diffractograms. Part 1: Measuring Pyrite in Powdered Coals (44)
• C. Caranoni, M. J. P. Reboul, and M. C. Soula - Préparation, Identification et Radiocristallographie d'un Hétérocycle Cétonique à Intérêt Médicinal: l'Isopropyl-3, phényl-2, diaza-1,3, one-5 bicyclo [3,3,0] octène-1 (48)
• N. Masciocchi and W. Parrish - New Crystal Data for High Temperature Hexagonal Silver Sulfate (50)
• International Report (53)
• Calendar of Meetings (53)
• Meeting Reports (54)
• Short Courses and Workshops (55)
• Book Review (56)
• ICDD Announcement (56)
• Computer Comments (57)
• Commercial Announcements (59)