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CADTutor provides free video tutorials, articles, downloads and a busy community forum for users of AutoCAD and associated software.

YouTube is a place to discover, watch, upload and share videos.

Reviews and free software downloads for Windows, Mac, Palm, Pocket PC, and Mobile Phones. The best programs and games. Buy software directly online.

Survey, Cross Section / X Section, Longitudinal Section / L Section, Quantity Estimates - Earth Filling, Cutting

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ASTM International develops international standards for materials, products, systems and services used in construction, manufacturing and transportation. ASTM standard specifications and test methods define uniform requirements and procedures.

Cambridge University Press advances learning, knowledge and research worldwide

IEEE Xplore. Delivering full text access to the world

Advanced vision technology for automatic detection & evaluation of road features. Partnership with INO

SSI is leading the way in precision computerized equipment for road and bridge surface testing. We offer a three different computerized road profiling systems. We also offer a full line of Panasonic Toughbook models.