Kalra, Ajay2008-05-032009-05-272008-05-032009-05-272008-05-03Kalra A. Polio eradication and environment. Indian Pediatrics. 2008 May; 45(5): 388-90http://imsear.searo.who.int/handle/123456789/9362engChild, PreschoolHealth PlanningHumansImmunization Programs --organization & administrationIndiaInfantInfant, NewbornPoliomyelitis --prevention & controlSanitationToilet FacilitiesJournal Article