TY  - BOOK
AU  - Crompton, Clifford W.
AU  - Wojtas, Walter A.
TI  - Pollen grains of canadian honey plants
T2  - Publication 1892/E
U1  - 581.1662 
PY  - 1993///
CY  - Ottawa
PB  - Canada Communication Group
KW  - Plantas melíferas
KW  - Polen
ER  -