TY  - BOOK
AU  - Rickson,Fred R.
TI  - Plant diversity: organisms
SN  - 0070053464
PY  - 1974///
CY  - New York
PB  - McGraw-Hill
KW  - Botany
KW  - Variation
KW  - Plants
KW  - Evolution
KW  - Anatomy and histology
ER  -