| https://listings.lib.msu.edu/illtc/1978.pdf#page=44 | 01/13/2017 | PDF Reader | | Item is within a single large file |
| https://d.lib.msu.edu/mwrtf/32/OBJ/view#page=8 | 07/31/2019 | PDF Reader | | Item is within a single large file; Proceedings of the 1980 Turf Conference of the Midwest reprint |
| https://listings.lib.msu.edu/mwrtf/1980.pdf#page=8 | 07/31/2019 | PDF Reader | | Item is within a single large file; Proceedings of the 1980 Turf Conference of the Midwest reprint |
| https://d.lib.msu.edu/lawci/79/OBJ/view#page=8 | 07/31/2019 | PDF Reader | | Item is within a single large file; Lawn Care Industry reprint; Variant title "Turfgrass research: Meeting the special needs of the lawn care industry" |
