Promocode LitRes for 15% discount + 2 books as a gift

<delivery>The discount is valid for 1 purchase of any number of books (via the shopping cart) within 2 days after activation of the promo code. <attention>The promo code can be used on any account, including the old one. The promo code can be used 1 time on your account. Promo code discounts cannot be combined with other discounts, promotions, or special offers.</attention></delivery>