000			00558nam a2200157Ia 4500
008			170101s1989 xx 000 0 und d
082			_a634.9 M28
245		0	_aMaintaining the long-term productivity of pacific northwest ... ecosystems
260			_aPortland _bTimber Press _c1989
300			_a28cm.: 256p.: illus.: ta
650			_aFOREST PRODUCTIVITY - NORTH WEST PACIFIC - CONGRESSES
653			_aFOREST AND FORESTRY CONGRESSES
653			_aFOREST ECOLOGY - CONGRESSES
653			_aFOREST PRODUCTIVITY - NORTH WEST PACIFIC - C
942			_2ddc _cB
999			_c107406 _d107406