Report of an investigation of the grasses of the arid districts of Kansas, Nebraska, and Colorado Vasey, George, 1822-1893 creator text book Washington Govt. print. off 1886 1886
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ENG Drought-tolerant plants Grasses QK1 .U4 no. 1 Bulletin (United States. Division of Botany), no. 1 https://www.biodiversitylibrary.org/bibliography/48723 agr09000487 10.5962/bhl.title.48723 DLC