TY  - BOOK
AU  - Kramer,K U.
AU  - Green,Peter S.
AU  - Kubitzki,Klaus
TI  - The families and genera of vascular plants
T2  - The families and genera of vascular plants
SN  - 3540517944
U1  - 582.0012 
PY  - 1990///
CY  - Berlin
PB  - Springer
KW  - Gymnosperms
KW  - Classification
KW  - Pteridophyta
N1  - Series editor: K. Kubitski
ER  -