[Sex relations of students in the 9th to 12th grades in a rural district].
D000293:Adolescent; D002648:Child; D005260:Female; D005859:Germany, East; D006801:Humans; D008297:Male; D012424:Rural Population; D012725:Sexual Behavior; D013334:Students / Q000523:psychology*
Sexualbeziehungen bei Schülern der 9. bis 12. Klassen eines Landkreises.