Analysis of quality and antibiotic residues in raw milk marketed informally in the Province of Pichincha – Ecuador di Byron Puga-Torres, Eduardo Aragón, Andrés Contreras, Dayanna Escobar, Karina Guevara, Lizeth Herrera, Nicolás López, Diana Luje, Michelle Martínez, Lenin Sánchez, Debora Tapia, Tania Villarreal, Luis Núñez

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