共 39 条
[1]
Bates E., 1979, EMERGENCE SYMBOLS CO
[2]
BAY E, 1975, F LANGUAGE DEV MULTI, V2
[4]
BROWN R, 1979, P NATIONAL S SIGN LA
[5]
CARMICHAEL L, 1964, NEW DIRECTIONS STUDY
[6]
Cattell P., 1940, SCIENCE
[8]
DECRINIS M, 1932, WIEN KLIN WCHNSCHR, V45, P1161
[9]
DEVILLIERS JD, 1978, LANGUAGE ACQUISITION
[10]
GARDNER BT, 1980, CHILDRENS LANGUAGE, V2