TY  - BOOK
AU  - Hopper, Robert  & Naremore, Rita C.
TI  - Children'sSpeech : a practical introduction to communication development
SN  - 0-06-042899-6
U1  - 372.6 Hop/Nar 
PY  - 1978///
CY  - Harper & Row, New york
ER  -