Note - all prices that you see on the site are at their 20% off price. There is no coupon code or special process for you to go through.
Join Our 14/7 Club and receive 40% off of list prices for the sale. After receiving your confirmation email, log in and see 40% off now, and 20% off everything in the store after the sale is over - plus 50% on selected 14/7 products.
I have collected reference books for over 50 years and it is now time to start parting with the collection...starting with World War 2 material...every week there be more titles until all 5000 books have sold