AMAN CHIPANTIZA, C. T.; ORTIZ BONOSO , K. J.; BERT VALDESPINO, J. E.; GUERRA IGLESIAS, S. Study of oral language development in 2-3-year-old infants from two educational institutions in Tungurahua. ConcienciaDigital, v. 9, n. 2, p. 36-65, 8 Apr. 2026.