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Individualized instruction in mathematics
comp. by Sam Duker
Bok Engelsk 1972
Individualized reading
Duker, Sam
Bok Engelsk 1971
Individualized reading : an annotated bibliography
Sam Duker
Bok Engelsk 1968
Listening bibliography
by Sam Duker
Bok Engelsk 1968
Listening : readings
compiled by Sam Duker
Bok Engelsk 1966
Listening bibliography
Duker, Sam
Bok Engelsk 1964