The American Geological Institute (AGI) announces the publication of The Geoscience Handbook: AGI Data Sheets 4th Edition. The book is now available for pre-order and is expected to ship to customers on September 15th, 2006. The Geoscience Handbook is the latest edition of AGI's long-standing Data Sheets publication. With a new format and expanded coverage of technical topics across the geosciences, the Data Sheets earned its new title for the 4th edition. This compilation of geologic information includes references for key geological concepts and short tutorials useful for all professionals and students needing geoscience information quickly in the field, office or lab. The Geoscience Handbook covers diverse subjects from geophysics to geologic map symbols to GPS usage and everything in between.