public GeneradorLibroElectronico(IBookBridge book) : base(book) { }
public GeneradorLibroPapel(IBookBridge book) : base(book) { }
protected GeneradorLibro(IBookBridge book) { _book = book; }
public GeneradorLibroElectronico(IBookBridge book) : base(book) { }
public GeneradorLibroPapel(IBookBridge book) : base(book) { }
protected GeneradorLibro(IBookBridge book) { _book = book; }