Intawat Burikam. 1987. Foraging ecology of pollinators in the early stayes of secondary succession in the western hemlock (Tsuga heterophylla (Raf.) Sarg.) zone of the Oregon coast range. , Oregon State University;

Intawat Burikam. Foraging ecology of pollinators in the early stayes of secondary succession in the western hemlock (Tsuga heterophylla (Raf.) Sarg.) zone of the Oregon coast range. . Oregon:Oregon State University, 1987.

Intawat Burikam. (1987) Foraging ecology of pollinators in the early stayes of secondary succession in the western hemlock (Tsuga heterophylla (Raf.) Sarg.) zone of the Oregon coast range . Oregon State University/Oregon.