Workbook for a successful workshop
| Prif Awdur: | |
|---|---|
| Awdur Corfforaethol: | |
| Fformat: | Llyfr | 
| Iaith: | English | 
| Cyhoeddwyd: | Chicago
          American Library Trustee Association, American Library Association
    
        c1967. | 
| Cyfres: | ALTA Publication
              no. 1 | 
| Pynciau: |