The development of modern-language skills theory to practice.

By Chastain, Kenneth..
Philadelphia Center for Curriculum Development 1971 .
xiii, 416 p. , Second ed. published in 1976 under title: Developing second-language skills. 24 cm..
0838427952 | 0838427529 (pbk.)

Spanish phonology for teachers a programmed introduction.

By Green, Jerald R..
Philadelphia Center for Curriculum Development, inc. 1970 .
131 p. 28 cm..

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The development of modern-language skills theory to practice.

Spanish phonology for teachers a programmed introduction.