TY  - BOOK
AU  - Alston, A. H.G.
TI  - Ferns and fern-allies of west tropical Africa
U1  - 587.310966 
PY  - 1959///
CY  - London
PB  - Crown Agents for Overseas governments and Administration
N1  -  A supplement to the second edition of the flora of west tropical Africa
ER  -