Seventh Conference of the Metropolitan Tree Improvement Alliance
The North Central Regional Plant Introduction Station was established in Ames, Iowa in 1948. The activities of this Station are conducted under the auspices of a continuing research project funded by the United States Department of Agriculture and twelve state agricultural experiment stations in the north central United States (Wilson et al. , 1985). This project was the seventh such cooperative project in the North Central Region and is commonly referred to as the NC-7 Project.
Widrlechner, Mark P., "NC-7 Regional Ornamental Trials: Evaluation of New Woody Plants" (1990). NCRPIS Conference Papers, Posters and Presentations. 10.