TY  - BOOK
AU  - Bell, Peter Robert.
TI  - Green plants: their origin and diversity 
SN  - 0931146208
PY  - 1992///
CY  - Portland, Or.
PB  - Dioscorides Press
KW  - Botany
KW  - Classification
KW  - Plants
KW  - Evolution
KW  - Variation
ER  -