TY  - BOOK
AU  - Richards, Jack C.
TI  - Inter change (Students casset's)
T2  - 0-521-37535-5
SN  - 8112432498x
U1  - 389.62 RIC 
PY  - 1991///
CY  - New York
PB  - Cambridge University Press
N1  - Includes bibliographical references
ER  -