https://listings.lib.msu.edu/patch/1980fal2.pdf#page=4 | 11/01/2017 | PDF Reader | | Item is within a single large file; A Patch of Green reprint |
https://listings.lib.msu.edu/nmtma/1981jul.pdf#page=2 | 11/01/2017 | PDF Reader | | Item is within a single large file; Northern Michigan Turf Managers Association [Newsletter] reprint |
https://archive.lib.msu.edu/tic/grnma/article/1980[...] | 01/16/2015 | PDF Reader | | GreenMaster reprint |