Construction and engineering.
| Format: | Bog | 
|---|---|
| Sprog: | English | 
| Udgivet: | Philippines
          Asiaworld Publishing House, Inc.
    
        [1976] | 
| Fag: | 
| Format: | Bog | 
|---|---|
| Sprog: | English | 
| Udgivet: | Philippines
          Asiaworld Publishing House, Inc.
    
        [1976] | 
| Fag: |