ISSN 0439-755X
CN 11-1911/B
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THE DEVELOPMENT OF CONCEPTION OF NUMBER IN CHILDREN 3-7 YEARS OLD IN NINE DISTRICTS THROUGHOUT CHINA AND THEIR ABILITY TO PERFORM ARITEMETRCAL OPERATIONS:A GENERAL REPORT
The Cooperative Research Group of Child's Conception of Numbers
Acta Psychologica Sinica . 1979, (
01
): 111 -120 .
