Explains how bacteria and viruses affect the human body and how the body fights them.
Editions · 5
Paperback
1986 · Trophy Pr
EN
9780064450539
Audiobook
1987 · HarperCollins Publishers
32 pp · EN
9780694001989
Paperback
1995 · HarperTrophy
32 pp · EN
9780064451543
Hardback
1999 · Tandem Library
32 pp · EN
9780808567325
Paperback
2015 · HarperCollins Publishers
EN
9781484487334
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