The Merck Index:- An Encyclopedia of Chemicals, Drugs, and Biologicals - 15th Edition 2013 (MERK), Merck & Co., Inc., USA
The Merck Index is the definitive reference work for scientists and professionals looking for authoritative information on chemicals, drugs and biologicals. It has been the leading source of information on chemical compounds for generations of scientists and professionals, selling over one million copies since its publication in 1889.