Title: Rāingān saphāp patčhuban læ kānpramœ̄nphon Phǣnphatthanā Kānsưksā hǣng Chāt, raya thī 4, Phō̜. Sō̜. 2520-2524
Description: Report on Fourth National Educational Development Plan, 1977-1981, with reference to secondary education.