Autor
Piaget, Jean, 1896-1980
2
Aebli, Hans
1
Battro, Antonio M.
1
Beard, Ruth M.
1
Bingham-Newman, A. M.
1
Bresson, F.
1
Castorina, José Antonio
1
Dolle, Jean-Marie
1
Flavell, John H.
1
Gorman, Richard M.
1
Gouin Décarie, Thérèse
1
Holloway, G. E. T.
1
Isaacs, Nathan
1
Labinowicz, Ed
1
Marx, Ch. H.
1
Meyer, F. S
1
Nuttin, Joseph
1
Osterrieth, Paul
1
Richmond, P. G.
1
Saunders, Ruth
1
Verstraete, Miguel
1
Vuyk, Rita
1