4.
Basic Concepts of Mathematics for Elementary Teachers
by Dubisch, Roy
ISBN: 9780201011685
List Price: $2.50
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Nature of Number, an Approach to Basic Ideas of Modern Mathematics
by Dubisch, Roy
ISBN: 9780758147127
List Price: $29.00
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Teaching of Mathematics - Roy Dubisch - Hardcover
by Dubisch, Roy
ISBN: 9780882751986
List Price: $13.50
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Basic Concepts of Mathematics for Elementary Teachers
by Dubisch, Roy
ISBN: 9780201011678
List Price: $16.95