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Dale Seymour Publications
> John W. Downs
John W. Downs
title
ISBN-13
(ISBN-10)
year of publica-
tion
other author(s)
Practical Conic Sections
978-O-86651-628-O
(O-86651-628-X)
2000
J. W. Downs
J.D.
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J. W.
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J. W. Downs
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John D.
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John W.
John W. Drake