[Absenteeism among pupils in schools with old and new systems of education].
D000041:Absenteeism; D000223:Adaptation, Psychological; D001290:Attitude; D002648:Child; D004493:Education / Q000639:trends; D005260:Female; D006801:Humans; D008297:Male; D011044:Poland; D012424:Rural Population; D013334:Students; D014505:Urban Population
Absencja szkolna uczniów klas pierwszych realizujacych dawny i nowy program nauczania.