The grass and clover seed trade in Vermont in 1907-1909 Harrington, George T. (George Traver), 1885- creator text book Burlington Vermont Agricultural Experiment Station 1909 1909
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ENG Clover Grasses Seed adulteration and inspection Seeds Vermont Weeds S121 .E3 no. 146 Bulletin (Vermont Agricultural Experiment Station), no. 146 https://www.biodiversitylibrary.org/bibliography/36182 17850540 10.5962/bhl.title.36182 RQF