Post_16_7.cs

public IEnumerable<LocalizedBook> GetAll(string cultureCode)
{
  return this.storage.Books.Select(
    b => new LocalizedBook()
    {
      Id = b.Id,
      Name = b.Name.Localizations.FirstOrDefault(l => l.CultureCode == cultureCode).Value,
      Description = b.Description.Localizations.FirstOrDefault(l => l.CultureCode == cultureCode).Value,
      Author = b.Author.Localizations.FirstOrDefault(l => l.CultureCode == cultureCode).Value,
      Year = b.Year
    }
  ).ToList();
}