TY  - BOOK
AU  - Swingle, Deane B.
TI  - A text book of systematic botany
T2  - Mc Graw-Hill Publications in the Botanical Sciences
U1  - 582 H6 
PY  - 1946///
CY  - London
PB  - Mc Graw-Hill Book
KW  - Botany-classification,Taxonomy
ER  -