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https://listings.lib.msu.edu/patch/1992aug.pdf#page=909/25/2017PDF ReaderItem is within a single large file
https://listings.lib.msu.edu/nwtgt/1993sum.pdf#page=509/27/2017PDF ReaderItem is within a single large file; Northwest Turfgrass Topics reprint with variant title "Thoughts on managing turf during the dog days"