KHARKALE, S. S.; BHUYAR, S. S.; GAIDHANE, M. K. ACOUSTICAL STUDIES OF COPOLYMER OF P-HYDROXY BENZOIC ACID AND FORMALDEHYDE IN N, N-DIMETHYL FORMAMIDE AND DIMETHYL SULFOXIDE BY ULTRASONIC VELOCITY MEASUREMENTS. International Journal of Current Pharmaceutical Research, [S. l.], v. 7, n. 1, p. 62–65, 2015. Disponível em: https://journals.innovareacademics.in/index.php/ijcpr/article/view/4723. Acesso em: 24 nov. 2024.