Forest Resource of the Ponderosa Pine Region of Washington and Oregon.
Cowlin, R.W.
Forest Resource of the Ponderosa Pine Region of Washington and Oregon. - 1942. - s. IV, 99 : il. , tab. , tabl. - Miscellaneous Publication. United States Department of Agriculture No. 490 . = Misc. Publ. U. S. Dep. Agric.
Forest Resource of the Ponderosa Pine Region of Washington and Oregon. - 1942. - s. IV, 99 : il. , tab. , tabl. - Miscellaneous Publication. United States Department of Agriculture No. 490 . = Misc. Publ. U. S. Dep. Agric.