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128 pages paperback 1989

nonfiction middle grade science challenging fast-paced
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142 pages paperback 1989

nonfiction middle grade science challenging fast-paced

missing duration info audio 1989

nonfiction middle grade science challenging fast-paced

128 pages paperback 1989

nonfiction middle grade science challenging fast-paced

128 pages paperback 1989

nonfiction childrens science challenging informative lighthearted slow-paced

missing page info paperback 1989

nonfiction middle grade science challenging fast-paced