e/Ingo tetralogy

Information
has gloss	eng: The Ingo tetralogy is a series of four children's novels by British author Helen Dunmore. The four books are, in chronological order, Ingo, The Tide Knot, The Deep and The Crossing of Ingo. The last book was nominated for the 2008 Booktrust Teenage Prize.
lexicalization	eng: Ingo tetralogy
instance of	e/Helen Dunmore