56,000 definitions, with 2,300 brand new to the 20th edition. 100 new and revised tables. 700 illustrations overall. 75 more patient care sections. 100 most frequently prescribed drugs in individual entries. Extensively cross-referenced. Every book contains a 30 day free trial of Taber's OnlineTaber's Cyclopedic Medical Dictionary: 20th Edition (Thumb Index), 20 was published 2005 under ISBN 9780803612075 and ISBN 0803612079.