Výsledky vyhľadávania
- Storing beetle-killed logs under snow to reduce losses after mountain pine beetle attack
Whitehead Roger J.
Wagner William Leroy
Nader Joseph A.
Victoria : Canadian Forest Service , 2008. - v, 21 s. : 2 obr., 1 tab., 28 cm
xkni - KNIHY
1, z toho voľných 1 - "Beetle-proofed" lodgepole pine stands in interior British Columbia have less damage from mountain pine beetle
Whitehead Roger J.
Russo Glenda L.
Victoria : Canadian Forest Service , 2005. - iv, 17 s. : obr., tab. + 28 cm
xkni - KNIHY
1, z toho voľných 1 - Reducing stand and landscape susceptibility to mountain pine beetle
Whitehead Roger J.
Martin Patrick
Powelson Allan
Victoria : B.C. Ministry of Forests , 2001. - 11 s. : obr., 28 cm
xkni - KNIHY
1, z toho voľných 1 - A comparison of four treatments for weeding Engelmann spruce plantations in the Interior Cedar Hemlock Zone of British Columbia : ten years after treatment
Whitehead Roger J.
Harper George James
Victoria : Canadian Forest Service , 1998. - vi, 21 s. : 16 obr., 8 tab., 27 cm
xkni - KNIHY
1, z toho voľných 1 - Potential loss due to decay and insect attack following selective harvest in coastal montane forests
Nevill Ralph John Leslie
Whitehead Roger J.
Victoria, B.C. : Canadian Forest Service , 1996. - v, 11 s. : 4 tab., 28 cm
xkni - KNIHY
1, z toho voľných 1