Maxwell, W. G., & Ward, F. R. (1976). Photo series for quantifying forest residues in the: Ponderosa pine type, ponderosa pine and associated species type, lodgepole pine type. Pacific Northwest Forest and Range Experiment Station, USDA Forest Service.
Chicago-Zitierstil (17. Ausg.)Maxwell, Wayne G., und Franklin R. Ward. Photo Series for Quantifying Forest Residues in the: Ponderosa Pine Type, Ponderosa Pine and Associated Species Type, Lodgepole Pine Type. Portland, Or: Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, 1976.
MLA-Zitierstil (9. Ausg.)Maxwell, Wayne G., und Franklin R. Ward. Photo Series for Quantifying Forest Residues in the: Ponderosa Pine Type, Ponderosa Pine and Associated Species Type, Lodgepole Pine Type. Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, 1976.