https://gsr.lib.msu.edu/1990s/1991/910917.pdf | 10/2002 | PDF Reader | | |
https://archive.lib.msu.edu/tic/holen/article/1992[...] | 11/29/2017 | PDF Reader | | Holes Notes reprint |
https://listings.lib.msu.edu/nmtma/1992augupdate.pdf | 11/29/2017 | PDF Reader | | Turf Times reprint |
https://archive.lib.msu.edu/tic/ttgnc/article/1992[...] | 11/30/2017 | PDF Reader | | Thru the Green [Northern California] reprint |
https://archive.lib.msu.edu/tic/matnl/article/1993[...] | 11/30/2017 | PDF Reader | | Turfgrass Matters reprint |