TY  - BOOK
AU  - Sporne,K.R.
TI  - The morphology of pteridophytes: the structure of ferns and allied plants 
T2  - Hutchinson university library : Biological sciences
SN  - 0091238609.
U1  - 587.31 SPO/M 
PY  - 1975///
CY  - London
PB  - Hutchinson
KW  - Pteridophyta
N1  - Includes index; Bibliography: p. [177]-185
ER  -