TY  - BOOK
AU  - Brendel,Leroy A.
AU  - Leffingwell,Elsie L.
TI  - English usage drills & exercises programmed for the typewriter
SN  - 0070074852 
U1  - 425 23
PY  - 1977///
CY  - New York
PB  - Gregg Division, McGraw-Hill
KW  - English language
KW  - Grammar
KW  - Programmed instruction
ER  -