Chapter 8 UNDERSTANDING INDICATORS LEFT BEHIND BY PEOPLE ............................ 8-1 Definition ................................................................................................................... 8-1 Types of Sign ............................................................................................................ 8-1 Classification of Sign ................................................................................................. 8-2 Origin of Sign ............................................................................................................ 8-2 Examples of Sign ...................................................................................................... 8-8 Rules of Analyzing Sign and the Effects of Light .................................................... 8-21 Assessing the Age of Sign ...................................................................................... 8-23 Interpreting Information ........................................................................................... 8-26 Using the Information Collected .............................................................................. 8-29
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