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40 pages • missing pub info (editions)
ISBN/UID: 9780756966447
Format: Not specified
Language: English
Publisher: Perfection Learning
Publication date: 01 January 2007
nonfiction
childrens
nature
science
young adult
medium-paced
Description
The immune system is a group of cells, tissues, and organs that work together to defend a body against invasion by harmful microbes.
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40 pages • missing pub info (editions)
ISBN/UID: 9780756966447
Format: Not specified
Language: English
Publisher: Perfection Learning
Publication date: 01 January 2007
nonfiction
childrens
nature
science
young adult
medium-paced
Description
The immune system is a group of cells, tissues, and organs that work together to defend a body against invasion by harmful microbes.