RT Book T1 Human development: a transactional perspective A1 Gordon, Ira J. LA English PP New York PB Harper Row YR 1975 UL https://krimdok.uni-tuebingen.de/Record/1607108968 CN BF721 SN 0060423927 K1 Child Psychology K1 Adolescent Psychology K1 Entwicklungspsychologie K1 Einführung