Chawla, Parvinder Versatile vaccines: a chance for every child/ Parvinder Chawla - New Delhi: National Book Trust, 2006. - xiv, 165 p. : ill. ; 22 cm. - (Popular science series) . ISBN: 8123746113 Subjects--Topical Terms: VaccinationVaccination of childrenVaccines--Research Dewey Class. No.: 615.372 / CHA/V