Explore the National Park Service's numerous collections, ... Symbols of Battle: Civil War Flags in NPS Collecti. Flags and colors rally troops to battle, ...
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Educational Technology and Education Conferences for June to December 2018, Edition #39. Prepared by Clayton R. Wright, crwr77 at gmail.com, May 12, 2018. A downloadable version (Word) is available
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Apart from structural wood preservation measures, there are a number of different preservatives and processes (also known as timber treatment, lumber treatment or pressure treatment) that can extend
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While metallurgical coal and thermal coal have similar geologic origins, their commercial markets and industrial uses are vastly different. This piece examines the primary differences between the two
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