URLDate
Verified		Extra Software
Requirements
(if any)		Access
Conditions		Notes
https://listings.lib.msu.edu/panct/1990.pdf#page=2101/19/2017PDF Reader
http://archive.lib.msu.edu/tic/mitgc/article/19901[...]01/29/2016PDF ReaderProceedings of the 60th Annual Michigan Turfgrass Conference reprint