Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Heritage, S., and P. Tabbush. 1989. The effect of insecticides on the quality of forest planting stock. Page 303 In Workshop on producing uniform conifer planting stock, York, England, UK, September 19-23, 1988. Forestry (Eynsham) 62(supplement).