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National Council of Teachers of Mathematics
> Richard W. Shoemaker
Richard W. Shoemaker
title
ISBN-13
(ISBN-10)
year of publication
Perfect Numbers
978-O-87353-O81-1
(O-87353-O81-O)
1973
R. S.
·
Richard S.
·
Richard W.
·
W.S.
Richard W. Shoup