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2. Science in the Secondary School
3. and , “An Analysis of Research on Instructional Procedures in Secondary School Science Part I: Outcomes of Instruction”, The Science Teacher, March, 1969: 62–70.
4. “Review, Appraisal and Recommendations Concerning Research on Classroom Behavior in Science”, Paper presented at the 43rd annual meeting of the National Association for Research in Science Teaching, Minneapolis, Minnesota. ERIC Document 059 874.