Rob Allerheiligen, a retired Colorado State University business professor, last year collected a sample of the soil at Khe Sanh in Vietnam, where thousands of U.S. Marine withstood a 77-day siege during the Vietnam War in 1968.
linkRob Allerheiligen, a retired Colorado State University business professor, last year collected a sample of the soil at Khe Sanh in Vietnam, where thousands of U.S. Marine withstood a 77-day siege during the Vietnam War in 1968.
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