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80 pages 2013

nonfiction childrens science informative lighthearted slow-paced

32 pages 2012

nonfiction science adventurous informative lighthearted medium-paced

missing page info paperback 2012

nonfiction childrens science adventurous informative lighthearted medium-paced

80 pages paperback 2012

nonfiction childrens funny informative lighthearted medium-paced

32 pages 2011

nonfiction informative lighthearted medium-paced

32 pages hardcover 2013

nonfiction childrens adventurous funny lighthearted slow-paced

32 pages hardcover 2013

nonfiction childrens informative slow-paced