TI  - UNDERSTANDING THE MAIN IDEA; INTRODUCTORY LEVEL
SN  - 0890616515
U1  - 372.623/JAM 
PY  - 1993///
CY  - USA
PB  - JAMESTOWN PUBLISHERS, INC.
KW  - MAIN IDEA
KW  - EXERCISES
KW  - WRITING ACTIVITIES
ER  -