Effect of Prolonged Drought on Water Relations of Ponderosa Pine Seedlings Growing in Basalt and Sedimentary Soils. Research Paper RM-301
Heidmann L.J.
King Rudy M.
Fort Collins : Rocky Mountain Forest and Range Experiment Staion, Forest Service, U.S. Department of Agriculture , 1992. - 8 s.: 4 obr., 1 tab.
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