Autor
Piaget, Jean
Inhelder, Bärbel
25
Inhelder, Barbel
8
Hernández Alfonso, Luis
7
Bovet, Magali
2
Echeverría Rivera, Luis E.
2
Sinclair, H.
2
Ackermann, Albert
1
Antoni, Nils
1
Bang, Vinh
1
Bliss, Joan
1
Bovet, M.
1
Bovet, Magali LoC
1
Busemann, Adolf
1
Chollet-Levret, Monique
1
Dami, Catherine
1
Hernandez Alfonso, Luis
1
Hernández Alfonso, Luis, tr
1
Inhelder, B.
1
Inhelder, Bärbel
1
Jakobi, Jolan
1
Katz, David
1
Katz, Rosa
1
Mounoud, Pierre
1
Robert, Madelon
1
Rossel-Simonete, Colette
1
Serrate, Agustín
1
Sinclair, Hermine
1
Utitz, Emil
1
Valls y Angles, Vicente
1
Valls y Anglés, Vicente
1