Volumes III/17a-i and III/22a, b (supplement) on semiconductor physics and technology have been published earlier, the latter covering new data on the technologically important group IV elements and III-V, II-VI and I-VII compounds only. The wealth of further data from the last decade is now being critically evaluated by over 30 well-known experts in the field of semiconductors. To meet the demands of today's scientists and to offer a complete overview of semiconductor data, all data available so far are published in the following way: a series of five subvolumes covers only the supplementary data to volumes III/17 and 22. Each subvolume includes a CD-ROM containing a complete, revised and updated edition of all relevant data. For each individual substance the information is presented in user-friendly documents containing data, figures and references. Easy access to the documents is provided via substance and property keywords, listings and full text retrieval.