TY  - BOOK
AU  - Clapham, A R 
AU  - Tutin, T G
AU  - Warburg, E F
TI  -  Flora of the British Isles
PY  - 1957///
CY  - Cambridge: 
PB  - The University Press, 
KW  - Science
KW  - Botany
KW  - Great Britain
N1  - Part-1 (Pteridophyta-papilionaceae)
ER  -