TY  - BOOK
AU  - Benson,Lyman
TI  - Plant taxonomy : : methods and principles 
T2  - A Chronica botanica publication
U1  - 580.12 23
PY  - 1962///
CY  - New York
PB  - The Ronald Press Co.
KW  - Plants
N1  - Include Bibliography and Index
ER  -