Productive and technological characteristics of the fiber of Suri alpacas from the Chuquibambilla Experimental Center, Puno Percy Fernando Arizaca Luna, Bilo Calsin Calsin 235-244 pdf (Spanish)
Sustainability of the drinking water supply of the rural community San José de Collana, Paucarcolla, Puno Alcides Hector Calderon Montalico, Edilberto Velarde Coaquira, Owal Alfredo Velasquez Viza, Jose David Velezvia Diaz 245-256 pdf (Spanish)
Evaluation of the noise level and its effects on the workers of the maintenance and production workshop of the Universidad Nacional del Altiplano, Puno Fanny Marisol Sonco Justo 257-267 pdf (Spanish)
Evaluation of arsenic concentration to propose the remediation alternative in the Ananea river Marcelino Vargas Quea 268-280 pdf (Spanish)
