TY  - BOOK
AU  - Lawrence,George Hill Mathewson
TI  - An introduction to plant taxonomy.
AV  - QK95 .L3
U1  - 580.12 
PY  - 1955///
CY  - New York
PB  - Macmillan
KW  - Plants
KW  - North America
KW  - Classification
ER  -