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https://archive.lib.msu.edu/tic/alapt/article/2019[...]02/11/2020PDF ReaderItem is within a single large file
http://magazine.lawnandlandscape.com/article/march[...]03/27/2019Variant title "Walk it out: The range of deck sizes and attachments available makes it a relevant workforce in a contractor's equipment arsenal"
https://www.lawnandlandscape.com/article/walk-it-out/03/27/2019Variant title "Walk-behind mower stil an industry staple: The range of deck sizes and attachments available makes it a relevant workforce in a contractor's equipment arsenal"