TY  - CHAP
A1  - Schneider, Wolfgang
T1  - Problems of longitudinal studies with young children: Practical, conceptual, and methodological issues
N2  - No abstract available.
KW  - Längsschnittuntersuchung
KW  - Kind
Y1  - 1989
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86521
ER  -