Girardin, J.L. and Broquen, P. 1995. The growth of Pinus ponderosa Dougl. and Pseudotsuga menziesii (Mirb.) Dougl. in different site conditions (Prov. NQN-R.A.). Bosque. 16, 2 (Dec. 1995), 57–67. DOI:https://doi.org/10.4206/bosque.1995.v16n2-05.