RT Book T1 Problemgeschichte der Psychologie A1 Pongratz, Ludwig J. 1915-1995 LA German PP Bern München PB Francke YR 1967 UL https://ixtheo.de/Record/1070668761 NO Literaturang CN BF83 K1 Psychology K1 Psychology : History K1 Psychology-history K1 Psychologie K1 Wissenschaft