Books by Im Proum:
![[Info]](https://onlinebooks.library.upenn.edu/info.gif)
Im Proum: Cambodian: Basic Course (2 volumes; with audio files for volume 1 and additional materials), also by Richard B. Noss (PDF and MP3 files at livelingua.com)- Im Proum, contrib.: Cambodian System of Writing and Beginning Reader, With Drills and Glossary (1970), by Franklin E. Huffman, also contrib. by Chhom-Rak Thong Lambert (multiple formats at Google)
Additional books by Im Proum in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Im Proum: Cambodian, basic course (Dept. of State, 1966), also by Foreign Service Institute (U.S.), Someth Suos, and Richard B. Noss (page images at HathiTrust)
Find more by Im Proum at your library, or elsewhere.