Instructional communication /
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York :
American Book Co.,
1969
|
| Pynciau: | |
| Classic Catalogue: | View this record in Classic Catalogue |
| Disgrifiad Corfforoll: | vi, 234 p. : illus. ; 23 cm. |
|---|---|
| Llyfryddiaeth: | Includes bibliographies and index. |