TY  - JOUR 
T1  - On brazilian supralittoral and brackish water snails
JO  - Boletim do Instituto Oceanográfico
A1  - Marcus, Ernst
SN  - 0373-5524
UL  - 10.1590/S0373-55241963000200004
VL  - 13 
Y1  - 1963
PB  - Brasil 
ER  -