Lombard, Sylvia J. Yao-English dictionary compiled by Sylvia J. Lombard edited by Herbert C. Purnell - Cornell University, Ithaca, New York Department of Asian Studies 1968 - 363 p. ; 28 cm. - Data paper (Cornell University. Southeast Asia Program) no. 69 . Subjects--Topical Terms: Yao language--Dictionaries--English