LITERATURE CITED
- Albers, M. A. 1976. Mycorrhizal association between Hebeloma arenosum and conifer seedlings. Plan B paper submitted in partial fulfillment of the requirements for a Master of Science degree, Univ. Wisconsin, Madison. Available from Department of Plant Pathology.
- Trappe, J. M., and R. F. Strand. 1969. Mycorrhizal deficiency in a Douglas-fir region nursery. Forest Sci. 15: 381–389.