Conservation of historic and cultural resources
| Prif Awdur: | |
|---|---|
| Awdur Corfforaethol: | |
| Fformat: | Llyfr | 
| Iaith: | English | 
| Cyhoeddwyd: | Chicago, Ill.
          American Society of Planning Officials
    
        c1969. | 
| Cyfres: | Report - American Society of Planning Officials, no. 244 | 
| Pynciau: |