The Pinatubo Negritos their useful plants and material culture
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr | 
| Iaith: | English | 
| Cyhoeddwyd: | Manila
          Bureau of Science
    
        1953. | 
| Cyfres: | Philippine Journal of Science
              vol. 81, nos. 3-4 |