TY  - JOUR 
T1  - Radular ultrastructure of South American Ampullariidae (Gastropoda: Prosobranchia)
JO  - Brazilian Journal of Biology
A1  - Martín, SM
A1  - Negrete, LHL
SN  - 1519-6984
UL  - 10.1590/S1519-69842007000400019
VL  - 67 
Y1  - 2007
PB  - Brasil 
ER  -