Byrd, Donald R. H.

Spectrum /book 2 by: Byrd, Donald R. H.; Costinett, Sandra; Veltfort, Anna (書目-錄音,音樂表演資料)

Spectrum /book 1 by: Byrd, Donald R. H.; Veltfort, Anna; Warshawsky, Diane (書目-語言資料,印刷品)

Spectrum 4 / by: Byrd, Donald R. H.; Veltfort, Anna; Warshawsky, Diane (Language materials, printed)

Spectrum 3 / by: Byrd, Donald R. H.; Veltfort, Anna; Warshawsky, Diane (Language materials, printed)

Spectrum 6 / by: Byrd, Donald R. H.; Costinett, Sandra; Veltfort, Anna (Language materials, printed)

Spectrum 5 / by: Byrd, Donald R. H.; Costinett, Sandra; Veltfort, Anna (Language materials, printed)

React interact :situations for communication / by: Byrd, Donald R. H.; Clemente, Isis C. (Language materials, printed)