TY  - BOOK
AU  - Beck, Charles B., ed.
AU  - Meyen, Sergei, ded.
TI  - Origin and evolution of gymnosperms
SN  - 978023106358X
U1  - 561.5 21st ed.
PY  - 1988///
CY  - New York
PB  - Columbia University Press
KW  - Gymnosperms, Fossil
KW  - Gymnosperms-Evolution
KW  - Gymnosperms-Origin
N1  - Index: pp 487-504
ER  -