Green, Samuel B.Mackintosh, R.S.University of Minnesota, Agricultural Experiment Station2018-04-062018-04-061901Green, Samuel B., "Outline of greenhouse laboratory work," (St.Anthony Park, Minn.:University of Minnesota, Division of Horticulture) Class bulletin no.12, 1901.https://hdl.handle.net/11299/195266enGreenhousesReport