1. Misc Pub. 68–;AAAS Commission on Science Education,1968
2. A summary of research in science education for the years 1968-1969: Elementary school level
3. An Assessment of Science Achievement of Five and Six Year Old Students of Contrasting Socio-Economic Backgrounds, Unpublished Doctoral Dissertation, The University of Texas, Austin, Texas, 1967.
4. The effect of instruction on the acquisition of conservation of volume