SaĆaga-Pylak, Monika The occurrence of allergic illnesses among children at the pre-school age in the rural and urban area. [electronic resource] - Annales Universitatis Mariae Curie-Sklodowska. Sectio D: Medicina 2004 - 321-4 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0066-2240 Subjects--Topical Terms: Child, PreschoolCross-Sectional StudiesFemaleHealth SurveysHumansHypersensitivity--epidemiologyMalePolandRural Population--statistics & numerical dataUrban Population--statistics & numerical data