(1992). Improving Instruction for Students at Risk Using History-Social Science Textbooks / Gilbert R. Guerin. [microform].
Chicago-viite (17. p.)Improving Instruction for Students at Risk Using History-Social Science Textbooks / Gilbert R. Guerin. [microform]. 1992.
MLA-viite (9. p.)Improving Instruction for Students at Risk Using History-Social Science Textbooks / Gilbert R. Guerin. [microform]. 1992.
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