Ahmed, S. S., Yaqub, M., Ahmed, K., & Shaikh, G. H. (2004). ULTRASONIC PROPAGATION IN AQUEOUS SOLUTION OF POLYVINYL ACETATE IN VARIOUS CONCENTRATIONS AT DIFFER- ENT TEMPERATURES: Short Communication. Biological Sciences - PJSIR, 47(4), 272–274. Retrieved from https://v2.pjsir.org/index.php/biological-sciences/article/view/1534