Urban-rural Differences in the Prevalence of Respiratory Symptoms of School Children in Hungary / Péter Rudnai [et al.]
  Bibliogr.: p. 77-78. - Abstr. eng.
  In: Central European Journal of Occupational and Environmental Medicine. - ISSN 1219-1221. - 2014. 20. évf. 1-2. sz., p. 67-78. : ill.