Comparing observations.
Contributors: University of Texas at Austin. Research and Development Center for Teacher Education.
Edition: 1st experimental edition.
Published: 1970
Language: eng
Number of pages: 49
Subjects: Science -- Methodology.; Science -- Study and teaching (Elementary)
Notes: On cover: ERIC reports.

On title page: The Research and Development Center for Teacher Education.

Photocopy. Bethesda, Md. Leasco Information Products, [1970].