TY  - BOOK
AU  - Erdtman, G.
TI  - Pollen and Spore Morphology/Plant taxonomy Vol.2
T2  - (Introduction to Palynology, v.2)
U1  - 561.13 E7P6 
PY  - 1972///
CY  - New York
PB  - Hafner
ER  -