TY  - BOOK
AU  - Perring, F. H.
AU  - ill.
TI  - Critical supplement to the atlas of the British flora
AV  - FOL QK306.P4 
PY  - 1968///
CY  - London
PB  - Thomas Nelson and Sons Ltd
KW  - Botany
KW  - Atlas
KW  - Britain
N1  - Includes: index
ER  -