Polio. (2004, May 23). Retrieved October 2, 2025, from http://www.essayworld.com/essays/Polio/8259
"Polio." Essayworld.com. Essayworld.com, 23 May. 2004. Web. 2 Oct. 2025. <http://www.essayworld.com/essays/Polio/8259>
"Polio." Essayworld.com. May 23, 2004. Accessed October 2, 2025. http://www.essayworld.com/essays/Polio/8259.
"Polio." Essayworld.com. May 23, 2004. Accessed October 2, 2025. http://www.essayworld.com/essays/Polio/8259.