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Prentice Hall
> Robert C Dwyer
Robert C Dwyer
title
ISBN-13
(ISBN-10)
year of publication
Teaching children through natural mathematics
978-O-13-891879-8
(O-13-891879-1)
1970
C.D.
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R. C.
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R.D.
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Robert C.
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Robert D.
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Robert Dwyer
Robert C. Dyer, editors Gries