URLDate
Verified		Extra Software
Requirements
(if any)		Access
Conditions		Notes
http://www.turfgrasssod.org/files/file/e782864c-6f[...]08/29/2013Microsoft WordTurfgrass Producers International Website reprint
http://www.thelawninstitute.org/education/?c=18332208/29/2013The Lawn Institute reprint
https://archive.lib.msu.edu/tic/bulls/article/1996[...]08/29/2013PDF ReaderOn Course reprint