TY  - BOOK
AU  - Kapp, Ronald O.
TI  - How to know pollen and spores
T2  - The pictured key nature series
U1  - 581.1662 
PY  - 1969///
CY  - Dubuque, Iowa
PB  - Brown
KW  - Esporas
KW  - Polen
KW  - Morfología
ER  -