“ULTRASONIC PROPAGATION IN AQUEOUS SOLUTION OF POLYVINYL ACETATE IN VARIOUS CONCENTRATIONS AT DIFFER- ENT TEMPERATURES: Short Communication”, Pakistan Journal of Scientific & Industrial Research, vol. 47, no. 4, pp. 272–274, Aug. 2004, Accessed: Mar. 10, 2026. [Online]. Available: https://www.v2.pjsir.org/index.php/biological-sciences/article/view/1534