Orgeon,s forest resources : their contribution in the state's economy Research Bulletin 23, September 1978 -н Brodie, J.Douglas

Бусад зохиолчид: “…McMahon, Robert O. ; Gavelis, William H.…”

Oregons forest resources : their contribution in the states economy -н Brodie, J. Douglas

Бусад зохиолчид: “…Gavelis, William H.…”