000
00295nam a2200121Ia 4500
001
84315
008
170722s9999 xx 000 0 und d
100
_a
Piaget, Jean And
245
_a
Psychology of the child tr by Helen weaver /
260
_c
1969.
700
_a
Inhelder, Barbel
942
_c
GEN
999
_c
77281
_d
77281