TY  - BOOK
AU  - Potsal , Paul M.  .
TI  - On raising  : one rule of english grammar and its theoretical implication / 
SN  - 0-262-66041-5
U1  - P111,J:2 
PY  - 1974///
CY  - Massachusetts : 
PB  - The Massachusetts Institute of Technology , 
KW  - Theoretical implication
ER  -