ID:DA00788590
Roth, Robert Earl
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by Robert E. Roth
Ohio State University, ERIC Center for Science, Mathematics, and Environmental Education 1976 Environmental education information reports
Available at 1 libraries
compiled by Robert E. Roth ... [et al.]
Education Associates c1973
by Robert E. Roth, Milton O. Pella and Clay A. Schoenfeld
Wisconsin Research and Development Center for Cognitive Learning, University of Wisconsin , Prepared by ERIC Document Reproduction Service operated by Computer Microfilm International Corp. 1970 Technical report / [Wisconsin Research and Development for Cognitive Learning, the University of Wisconsin] no. 126
by Robert Earl Roth
University Microfilms International 1976