AHMED, S. S.; YAQUB, M.; AHMED, K.; SHAIKH, G. H. ULTRASONIC PROPAGATION IN AQUEOUS SOLUTION OF POLYVINYL ACETATE IN VARIOUS CONCENTRATIONS AT DIFFER- ENT TEMPERATURES: Short Communication. Biological Sciences - PJSIR, [S. l.], v. 47, n. 4, p. 272–274, 2004. Disponível em: https://v2.pjsir.org/index.php/biological-sciences/article/view/1534. Acesso em: 3 jul. 2024.