TY  - JOUR 
T1  - Natural Waters in Amazonia. VI-Soluble Calcium Properties (
JO  - Acta Amazonica
A1  - Brinkmann, W. L. F.
A1  - Santos, A. dos
SN  - 0044-5967
UL  - 10.1590/1809-43921973032033
VL  - 3 
Y1  - 1973
PB  - Brasil 
ER  -