TY  - JOUR 
T1  - The thecamoebae (Protozoa, Rhizopoda) of small Amazonian forest streams and their possible use as indicator organisms for waterquality 
JO  - Acta Amazonica
A1  - Walker, Ilse
SN  - 0044-5967
UL  - 10.1590/1809-43921982123S079
VL  - 12 
Y1  - 1982
PB  - Brasil 
ER  -