TY  - BOOK
AU  - Blumenthal,Joseph C.
TI  - English: a programmed course in grammar and usage
PY  - 1981///
CY  - New York
PB  - Harcourt Brace Jovanovich
KW  - English language
KW  - Programmed instruction
KW  - Composition and exercise
N1  - Includes index
ER  -