The Taxonomy And Ecology Of The Genus Ferocactus: Explorations In The Usa And Mexico Genus Ferocactus

George Lindsay. New Studies Of Ferocactus : A Review Of Ferocactus Britton & Rose / Contributed By J. Hugo Cota ; With Written Additional Contributions By Madelyn Lee: Ferocactus Synonyms, Larry Mittich: Biography Of George Lindsay, Frank Thrombley: Ferocactus Acanthodes ; With Illustrations By T.m. Bock ... [et Al.]. Revision Of The Author's Thesis (ph. D.)--stanford University, 1955, With Revised Identification Key And Additional Contributions By Other Authors. Includes Bibliographical References.