Magnolia 'Ann', 'Betty', 'Jane', 'Judy', 'Pinkie', 'Randy', 'Ricki' and 'Susan' : U.S. National Arboretum plant introduction / Floral and Nursery Plants Research Unit.
National Arboretum (U.S.). Floral and Nursery Plants Research Unit.
Washington, DC 3501 New York Ave., N.E., Washington 20002 : U.S. National Arboretum, U.S. Dept. of Agriculture, Agricultural Research Service 1998
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