Boonpiam, Namngern Anglo-Thai relations, 1825-1855 a study in changing of foreign policies / [microform] : Namngern Boonpiam. - Ann Arbor, Mich. : University Microfilms International, 1980. - 3 microfiches ; 11 x 15 cm. Thesis (Ph.D.)-University of Nebraska, 1979. Subjects--Geographic Terms: Thailand--Foreign relations--United Kingdom