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1by Piaget Jean, Albertini Barbara von, Blanchet Madeleine, Ferrière Claude de, Frank Olga, Frei J., Lagier Monique, Martin Madeleine, Mauris A., Reymond Madeleine, Bussmann Esther
Presses universitaires de France 1946Book -
2by Piaget Jean
Presses univ. de France cop. 1946, impr. 1981Book -
3by Piaget Jean
Presses universitaires de France 1973Book