[1]
Vallejo Choez, P. et al. 2016. Referential calculation of particulate matter in the air as a factor of environmental pollution in the urban area of the city of Pujilí. Enfoque UTE. 7, 2 (Jun. 2016), pp. 109 – 119. DOI:https://doi.org/10.29019/enfoqueute.v7n2.99.