Dyfyniad APA

Calvo-Brenes, G., & Araya-Ulloa, A. (2018). Evaluation of two water quality indices in several sites of the La Central stream, Pacayas de Alvarado, Costa Rica.

Dyfyniad Arddull Chicago

Calvo-Brenes, Guillermo, y Andrea Araya-Ulloa. Evaluation of Two Water Quality Indices in Several Sites of the La Central Stream, Pacayas De Alvarado, Costa Rica. 2018.

Dyfyniad MLA

Calvo-Brenes, Guillermo, y Andrea Araya-Ulloa. Evaluation of Two Water Quality Indices in Several Sites of the La Central Stream, Pacayas De Alvarado, Costa Rica. 2018.

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