Footnote bh

bhSee Pérez and Fraga 1987b; Ríos and Pérez 1999.

Pérez, F.F. and F. Fraga. 1987b. A precise and rapid analytical procedure for alkalinity determination. Mar. Chem. 21:169-182.

Ríos, A.F. and F.F. Pérez. 1999. Improvements in potenciometric determinations of the CO2 oceanic system using seawater sub-standards and CO2 reference materials. Ciencias Marinas 25(1):31-49.

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