Beat the Christmas rush and complete your holiday shopping list in National Book Store’s Warehouse Sale. Get up to 80% off on books, supplies and gift items from November 15 to 18, 2012, from 10 am to 7 pm, only at the 4th Floor of National Book Store Quezon Avenue cor. Sct. Borromeo and Panay Avenue. Per DTI-NCR Permit No. A3-1215 Series of 2012.