Growth of lodgepole pine thinned to various densities on two sites with differing productivities in central Oregon [microform] / P. H. Cochran and Walter G. Dahms (Research paper PNW ; RP-520)
Growth of lodgepole pine thinned to various densities on two sites with differing productivities in central Oregon [microform] / P. H. Cochran and Walter G. Dahms