Ang libangang duplo manga sarisaring paghahanay at paglalabas ng mga pangangatwiran at pagsasanggalan [microform].
| প্রধান লেখক: | |
|---|---|
| বিন্যাস: | Visual Material |
| প্রকাশিত: |
Quezon City
Photoduplication Service, University of the Philippines Library
1976.
|