Verbatim text: Tillson, A. H. and C. H. Muller. 1942. Anatomical and taxonomic approaches to subgeneric segregation in American Quercus. Amer. J. Bot. 29: 523-529.
Author: Tillson, A.H., Muller, C.H.
Year: 1942
Title: Anatomical and taxonomic approaches to subgeneric segregation in American Quercus
Journal: Amer. J. Bot
Volume: 29
Pages: 523–529