URLDate
Verified		Extra Software
Requirements
(if any)		Access
Conditions		Notes
https://listings.lib.msu.edu/nwtgc/1988.pdf#page=701/17/2017PDF ReaderItem is within a single large file
https://listings.lib.msu.edu/nwtgc/1990.pdf#page=58Proceedings of the 44th Northwest Turfgrass Conference reprint; Variant introduction