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Prentice Hall
> Roberta W. Smoler
Roberta W. Smoler
title
ISBN-13
(ISBN-10)
year of publication
The Useful Pig
978-O-13-943572-O
(O-13-943572-7)
1989
R. S.
·
Roberta Wolfe Smoler
·
W.S.
Roberta W. Waddell