The varieties of plums derived from native American species Wight, W. F. (William Franklin), 1874- creator text book Washington, D.C U.S. Dept. of Agriculture 1915 1915
print
ENG Caption title. Contribution from the Bureau of Plant Industry. Plum United States Varieties Bulletin of the U.S. Department of Agriculture, no. 172 https://www.biodiversitylibrary.org/bibliography/109224 12197379890419 agr15000332 10.5962/bhl.title.109224 Library, U.S. Dept. of Agriculture