This bibliography is an outgrowth of a project undertaken in 1975 by the ERIC Clearinghouse on Languages and Linguistics. The project was to update the bibliography of American doctoral dissertations in linguistics covering the years 1900-1964. Due to the large number of dissertations, the update was broken down into three parts, of which this bibliography is the third. The approximately 200 entries include dissertations in the areas of bilingual language acquisition, psycholinguistics, teaching methods and instructional materials for bilingual education and English as a second language, language competence assessment, the sociolinguistics of bilingualism and bilingual education, and teacher education. (CLK)