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Dr. Zed's Sensational Science Activities /
by Penrose, Gordon,
Publication:
Toronto : Greey de Pencier Books, 1990
. 48 p. :
, Inlcudes index.
28 cm.
Date:1990
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Kitchen Fun /
Publication:
Toronto : Greey de Pencier Books, 1988
. 32 p. :
28 cm.
Date:1988
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Magic mud and other great experiments
by Penrose, Gordon
Publication:
Toronto: Greey de Pencier Books, 1987
. 48 p.
Date:1987
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(1),
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