TY  - BOOK
AU  - Duangduen Yuvahongs Suwattee
TI  - A linguistic analysis of difficulties in the English verbal system encountered by native speakers of Thai
PY  - 1971///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - English language
KW  - Verb
N1  - Thesis (Ph.D.) - University of North Carolina, 1971
ER  -