TY - BOOK AU - Bieger, George R. TI - Educational research SN - 0-8273-6834-8 U1 - BCir.370.78 PY - 1996/// CY - --U.S.A PB - Delmar Publishers N1 - Include reference and index; --Chapter 1.Identifying research problems --chapter 2. selecting a research approach --chapter 3. research design --chapter 4. threats to internal and external validity --chapter 5. sampling --chapter 6.choosing statistical techniques --7. Interpreting research results --chapter 8. The research report --chapter 9. ethical considerations ER -