. Effects of different systems and intensities of grazing upon the native vegetation at the Northern Great Plains Field Station . Fig. 2.—Unit in the 30-Acre Pasture Closed to Grazing in 1921. Note the plants of A rlcmisia frigiia, which are much larger, coarser, and thicker on the ground than in the units closed during the previous seasons. October, 1921.

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectforagep, bookyear1923