Muciño-Vélez, Alberto, 		Guillén Guillén, César, 		Tahuiton-Mora, Antonio, AND 		Orozco-Mendoza, Eligio.
" Influence of the sand on the mechanical properties of mortars made with different brands of cement" <em>CIENCIA ergo-sum</em> [Online], Volume 29 Number 1 (1 April 2022)