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Douglas Camine
D.C.
·
Douglas C.
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ISBN-13
(ISBN-10)
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tion
other author(s)
Connecting Math Concepts: Lesson Sampler - Levels A, B, C & D
978-O-574-15781-2
(O-574-15781-6)
1992
Siegfried Engelmann · Owen Engelmann
Douglas Campana