共 30 条
[1]
ANDERSON S H, 1972, Northwest Science, V46, P194
[2]
[Anonymous], WILDLIFE HABITAT MAN
[3]
BALDA RP, 1975, 1 US DEP AGR FOR SER
[4]
BEUTER JH, 1976, 19 OR STAT U SCH FOR
[6]
BRUNS H, 1960, BIRD STUDY, V7, P193
[7]
BULL EL, 1977, J FOREST, V75, P335
[9]
CLINE SP, 1977, THESIS OREGON STATE
[10]
CONNER RN, 1975, J FOREST, V73, P781