Verbatim text: Cooper-Driver,G. 1977. Chemical evidence for separating the Psilotaceae from the Filicales. Science 198: 1260--1262.
Author: Cooper-Driver, G.
Year: 1977
Title: Chemical evidence for separating the Psilotaceae from the Filicales
Journal: Science
Volume: 198
Pages: 1260–1262
PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/17741707