Watersheds.
| 企業作者: | |
|---|---|
| 格式: | 圖書 | 
| 語言: | English | 
| 出版: | Quezon City
          The Institute
    
        1986. | 
| 叢編: | Philippine environment series : water resources Institute for Science and Mathematics Education Development, University of the Philippines
              3 | 
| 主題: | 


