Reference:Johnson1989a
Revision as of 19:05, 26 July 2019 by Unknown user (talk)
Verbatim text: Johnson, D.L. 1989. Species and Cultivars of the Genus Magnolia (Magnoliaceae) Cultivated in the United States. M.S. thesis. Cornell University.
Author: Johnson, D.L.
Year: 1989
Title: Species and Cultivars of the Genus Magnolia (Magnoliaceae) Cultivated in the United States