Au coeur du pays khmer: notes cambodgiennes by Adrien Pannetier Notations on Cambodian daily life, politics and mores collected in 1917-1918 by a French "country doctor". In French
Recherches sur les Cambodgiens by George Groslier George Groslier's encyclopaedia-like sum on the Ancient Khmer civilization, "d'après les textes et les monuments depuis les premiers siècles de notre ère". In French
Chansons cambodgiennes (Cambodian Songs) by Albert Edouard Lazare Tricon & Charles Bellan 54 traditional Khmer songs transcribed with musical scores and a temptative transliteration. In French & Khmer