. A computer program for evaluating forestry opportunities under three investment criteria. Forest management Computer programs; Forests and forestry Economic aspects. Page 8 of 14. f yco= VAL/V (L,IRT) val/a/(l,xrt-i3 = f?ATE(x«Ti = RPrTE (XRT-l} II-/OO r 1. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chappelle, Daniel E. Portland, Or. : Pacific Northwest Forest and Range Experiment Station, U. S. Dept. of Agriculture

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