American elm (Ulmus americana) is believed to be the most aesthetically pleasing tree in the North American landscape. Its height, symmetrical crown, and arching vase shape made it a favorite of arboriculturists and nurserymen, and it was planted in great numbers....
CITATION STYLE
Sticklen, M. B., Hajela, R. K., Bolyard, M. G., Graham, L. S., & Sherald, J. L. (1994). Genetic Transformation in Ulmus Species (Elms) (pp. 401–410). https://doi.org/10.1007/978-3-662-09366-5_27
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