共 9 条
[1]
COWAN PA, 1966, AM PSYCHOL, V21, P623
[2]
COGNITIVE ASPECTS OF ROLE-TAKING IN CHILDREN
[J].
JOURNAL OF PERSONALITY,
1960, 28 (04)
:383-396
[3]
Contingency planning: Trade's role in sustainable world food security
[J].
AT THE CONFLUENCE - SELECTION FROM THE 2012 WORLD WATER WEEK,
2013, 1
:20-29
[4]
FRY CL, THESIS U ROCHESTER
[6]
Harvey O. J., CONCEPTUAL SYSTEMS P
[7]
KAGAN J, 1964, PSYCHOL MONOG, V78
[8]
PIAGET J, COMMENTS VYGOTSKYS C
[9]
Piaget Jean, LANGUAGE THOUGHT CHI