Verbatim text: Wallace, R. S. and A. C. Gibson. 2002. Evolution and systematics. In: P. S. Nobel, ed. 2002. Cacti: Biology and Uses. Berkeley. Pp. 1–21.
Author: Wallace, R.S., Gibson, A.C.
Year: 2002
Title: Evolution and systematics
Editor: Nobel, P.S.
Book year: 2002
Book title: Cacti: Biology and Uses
Pages: 1–21
PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/2729071627290698272906282728958627289554272895002728949227289473272894082728940127289390272893802728933527289326272892802728927727289259272892132728918727289157