Gulati, P.
Social studies and population education
Tata McGraw-Hill, 1984
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Barnes, Donald L.
New approaches to teaching elementary social studies
Burgess, 1969
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Farris, Pamela J.
Elementary & Middle School Social Studies: an interdisciplinary instructional approach
New York, 2001
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Levin, Jack
Elementary statistics in social research
Harper & Row, 1973
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McCormick, Thomas Carson, 1892-
Elementary social statistics
McGraw-Hill, 1941
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