TY  - BOOK
AU  - Wolfe,Jack A.
AU  - Schorn,Howard E.
ED  - United States
TI  - Taxonomic revision of the Spermatopsida of the Oligocene Creede flora, southern Colorado
U1  - 561.19788 20th ed.
PY  - 1991///].
CY  - [Washington]: 
PB  - [United States Government Printing Office], 
KW  - Paleobotany
KW  - Oligocene
KW  - Colorado
KW  - Creede Formation (Colorado)
N1  - First printing 1990; Second printing 1991; Includes bibliographical references (p. 38-40)
ER  -