000 00371cam a2200145 i 4500
020 _a0801637856
050 0 0 _aMED RC423
_bP43
100 1 _aPerkins, William H.
245 1 0 _aSpeech pathology : an applied behavioral science
250 _a2d ed.
260 _aSaint Louis
_bC. V. Mosby Co.
_c1977
300 _ax, 459p.
_bill.
650 0 _aSpeech disorders
942 _cBK
999 _c8036
_d8036