TY  - BOOK
AU  - Benson,Lyman David
AU  - Laudermilk,Jerome D.
TI  - Plant classification
U1  - 580.12 
PY  - 1957///
CY  - Boston
PB  - D. C. Heath
KW  - Plants
KW  - Classification
N1  - Glossary : p. 651-666; Includes index
ER  -