Gordon Penrose

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Dr. Zed's science surprisesGordon Penrose
Dr. Zed's science surprises
Gordon Penrose · 1989 · 32 pages
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More science surprises from Dr. ZedGordon Penrose
More science surprises from Dr. Zed
Gordon Penrose · 1992 · 32 pages
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Sensational science activities with Dr. ZedGordon Penrose
Sensational science activities with Dr. Zed
Gordon Penrose · 1990 · 48 pages
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