Výsledky vyhľadávania
- Forest floor and soil nutrients five years after urea fertilization in a grand fir forest
Tiedemann A.R.
Mason Richard R.
Wickman Boyd E.
Northwest science. Vol. 72, No. 2 (1998), s. 88-95
xcla - ČLÁNKY - Historical patterns of western spruce budworm and Douglas-fir tussock moth outbreaks in the northern Blue Mountains, Oregon, since A.D. 1700
Swetnam Thomas W.
Wickman Boyd E.
Paul H. Gene
Portland : USDA Forest Service , 1995. - 27 s. : 7 obr., 4 tab., 28 cm
xkni - KNIHY
1, z toho voľných 1 - Mammoth Lakes Revisited - 50 Years After a Douglas-fir Tussock Moth Outbreak. Research Note PNW-RN-498
Wickman Boyd E.
Starr Lynn G.
Portland : U.S.Department of Agriculture, Pacific Northwest Research Station , 1990. - 6 s.: 1 obr., 1 tab.
xkni - KNIHY
1, z toho voľných 1