TY  - BOOK
AU  - Ferguson I K Ed.
AU  -  Muller J Ed.
TI  - Evolutionary significance of the exine
T2  - Linnean society symposium series; 1
U1  - I,166:66, L6 
PY  - 1976///
CY  - London
PB  - Academic         
KW  -  Pollen
KW  - Botany
ER  -