Water pollution index of high Andean micro-basin of the Chumbao River, Andahuaylas, Peru by David Choque-Quispe, Betsy Suri Ramos-Pacheco, Carlos Alberto Ligarda-Samanez, Aydeé Marilú Solano-Reynoso, Odilon Correa-Cuba, Yadira Quispe-Quispe, Yudith Choque-Quispe

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Drying and color in punamuña leaves (Satureja boliviana) by David Choque-Quispe, Betsy Suri Ramos-Pacheco, Aydeé Marilú Solano-Reynoso, Carlos Alberto Ligarda-Samanez, Yudith Choque-Quispe, Diego Elio Peralta-Guevara, Yadyra Quispe-Quispe

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Study of the pollution by surfactants in a river of a high Andean micro basin by David Choque-Quispe, Mery Luz Masco-Arriola, Betsy Suri Ramos-Pacheco, Aydeé Marilú Solano-Reynoso, Carlos Alberto Ligarda-Samanez, Yudith Choque-Quispe, Jhunior Felix Alonzo-Lanado

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