Taxonomic revision of the Spermatopsida of the Oligocene Creede flora, southern Colorado

Jack A. Wolfe by Jack A. Wolfe and Howard E. Schorn
Bok · Engelsk · 1990

Utgitt	Washington, D.C. : G.P.O. , 1990
Omfang	IV, 40 s., 13 pl. : ill.