By Dr. Robert DupontThese comprehensive manuals are the only resources available on implementing drug testing in specific settings. Each manual shows how drug testing works, how to incorporate it into your setting, how to deal with problems such as false positives, and how to evaluate outcomes. 128 to 152 pages each. Softcover. 2005. $34.95 each. SPECIAL: Purchase all three manuals for $99.95.
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