Plantae | Pinales | Pinaceae | Pseudotsuga | Pseudotsuga menziesii
Vogt KA, Vogt DJ, Moore EE, Fatuga BA, Redlin MR, Edmonds RL. 1987. Conifer and Angiosperm fine-root biomass in relation to stand age and site productivity in douglas-fir forests. Journal of Ecology 75: 857-870.