Castro-Garzón, Hernando, Rodríguez Miranda, Juan Pablo, Rivas Trujillo, Edwin 2020. Determination of contamination in the transept, la Esperanza - Casibare, of the lower reaches of the Buquepipe in the city of Villavicencio Meta Colombia. International Journal of Advanced Science and Technology. 29, 7 (Jul. 2020), 11850 - 11858.