TY  - RPRT
TI  - Phonological process decline from 2 1/2 to 8 years.
AU  - J E Roberts
AU  - M Burchinal
AU  - M M Footo
PY  - 1990
DO  - 10.1016/0021-9924(90)90023-r
UR  - https://pubmed.ncbi.nlm.nih.gov/2373776/
ID  - 2373776
ER  -