TY  - BOOK
AU  - Lass, Roger
AU  - Lass, Roger
TI  - On the derivative status of phonogical rules : The function of metarules in sound change
U1  - P:38:1 
PY  - 1969///
PB  - Ind. Univ. Ling. Club
KW  - P:38:1
ER  -