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article/chapitre/communication
A. Harvey ; J. Geist ; G. Mac Donald ; M. Jurgensen ; P. Cochran ; D. Zabowski ; R. Meurisse | 1994Productivity of forest and range land soils is based on a combination of diverse physical, chemical and biological properties. In ecosystems characteristic of eastside regions of Oregon and Washington, the productive zone is usually in the upper[...]ouvrage
50 species of Stauroneis sensu stricto from western Montana northern Idaho, northeastern Washington ans southwestern Alberta, including 16 species described as new.article/chapitre/communication
W. Mac Comb ; T. Spies ; W. Emmingham | 1993thèse/mémoire
article/chapitre/communication
D. De Bell ; G. Clendenen ; J. Zasada | 1993