The 1999 Pocket PDR Data Card compresses the equivalent of 2,000+ pages of the 1999 PDR and PDR for Ophthalmology into a remarkably compact data card. Ordering the new 1999 Pocket PDR Digital System guarantees you access to the same quality information you've come to expect from PDR -- up-to-the-minute FDA approved information on thousands of prescription drugs from more than 250 drug manufacturers.