TY  - JOUR 
T1  - Periphytic algae biomass at different shading levels: an experimental approach
JO  - Acta Limnologica Brasiliensia
A1  - Santos, Helivania Sardinha dos
A1  - Rodrigues, Liliana
SN  - 2179-975X
UL  - 10.1590/S2179-975X7520
VL  - 33 
Y1  - 2021
PB  - Brasil 
ER  -