Std::list Получение доступа к произвольному элементу

list <Abonent> l1,l2;
    Abonent obama213("Пупкин","Поток","Чудненко","330216","12345","12.12.2017","Оплачено",150,"11.11.2015");
    Abonent obama214("Васькин","Октябрьский","Чудненко","771144","54321","12.11.2015","Неоплачено",120,"10.10.2014");
    Abonent obama215("Боб","Поток","Малахова","290874","007","1.1.1998","Оплачено",12000,"15.15.1950");
    Abonent obama216("Барабака","Поток","Малахова","290874","007","1.1.1998","Оплачено",12000,"15.15.1950");

class Abonent
{
 
  public:
    string familia;
    string raion;
    string adres;
    string number_phone;
    string dogovor_numb;
    string data_dogovora;
    string oplata_ystanovki;
    int abonentskay_plata;
    string data_last_plateja;
 
    Abonent(): familia(""),raion(""),adres(""),number_phone(""),dogovor_numb(""),data_dogovora(""),oplata_ystanovki(""),abonentskay_plata(0),data_last_plateja("") {};
    Abonent(string _familia, string _raion,string _adres,string _number_phone,string _dogovor_numb,string _data_dogovora,string _oplata_ystanovki,int _abonentskay_plata,string _data_last_plateja):
         familia(_familia),raion(_raion),adres(_adres),number_phone(_number_phone),
         dogovor_numb(_dogovor_numb),data_dogovora(_data_dogovora),oplata_ystanovki(_oplata_ystanovki),abonentskay_plata(_abonentskay_plata),data_last_plateja(_data_last_plateja){};
 
    Abonent ( const  Abonent &e) :  familia(e.familia),raion(e.raion),adres(e.adres),number_phone(e.number_phone),dogovor_numb(e.dogovor_numb),
    data_dogovora(e.data_dogovora),oplata_ystanovki(e.oplata_ystanovki),abonentskay_plata(e.abonentskay_plata),data_last_plateja(e.data_last_plateja){};
     friend std::ostream& operator<<(std::ostream& out, const Abonent& e);
     friend std::istream& operator>>(std::istream& in, Abonent& e);
 
void show()
    {
        cout << "Фамилия - " << familia << endl << "Номер телефона -  " << number_phone << endl;
 
    }
      bool operator==(const Abonent&obj)
    {
        return obj.familia==this->familia;
    }
 
    string getName()const
    {
        return familia;
    }
        int getPlata()const
    {
        return abonentskay_plata;
    }
 
};
 
struct B : public binary_function< Abonent, string, bool > {
    bool operator () (const Abonent &obj, const string &familia) const {
        return obj.familia == familia;
    }
};

void GENERATION()
{
    std::list<Abonent>::iterator iter,it;
    cout<<l1.back().getPlata();
}

for(std::list<Abonent>::iterator iter=l1.begin();iter!=l1.end();++l1)
{
    l1->show();
    int plata= l1->abonentskay_plata;
}

Abonent temp;
 for (std::list<Abonent>::iterator it = l1.begin(); it != l1.end(); it++){
 
      for (std::list<Abonent>::iterator iter = l2.begin(); iter != l2.end(); iter++){
                    temp=*iter;
                    cout<<temp.adres;
 
 
 
 
 
            }
 
    }