TY - RE AU - Curtis, R.O. TI - Procedures for establishing and maintaining permanent plots for silvicultural and yield research T2 - General Technical Report PY - 1983/// CY - Washington, D.C. (USA) PB - U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station KW - AGROVOC KW - Parcels KW - Data KW - Silviculture KW - Yields N2 - This paper reviews procedures for establishing and maintaining permanent plots for silvicultural and yield research; discusses purposes, sampling, and plot design; points out common errors; and makes recommendations for research plot designs and procedures for measuring and recording data ER -