TY  - BOOK
AU  - Verduin,John R.
AU  - CLARK,Thomas A.
TI  - Distance education: the foundations of effective practice
SN  - 155542306X
AV  - LC5800 VER
PY  - 1991///
CY  - San Francisco
PB  - Jossey-Bass
KW  - Distance education
KW  - sears
N1  - Includes bibliographical references and index
ER  -