ISSN 0439-755X
CN 11-1911/B
A PRELIMINARY STUDY ON THE DEVELOPMENT 0F SCHOOL-CHILDREN'S COGNITI0N OF THE STRUCTURE 0F APPLIED ARITHMETICAL PR0BLEM (1)
He Ji-quan (Institute of Psychology, Academia Sinica)
Acta Psychologica Sinica . 1988, (01): 10 -16 .