Lobsters are invertebrates, members of the Class Crustacea of the Phylum Arthropoda. This class includes animals without backbones and with hard shells like crab, shrimp, crayfish, water fleas and wood lice. A male lobster is called a cock and a female a hen or chicken (when she weighs about 1 pound).
The Big Book serves as the basis of Alcoholics Anonymous (AA). It contains the 12 steps that are at the core of the Alcoholics Anonymous program, as well as stories about alcoholics who have been through the recovery process.
The Big Book was originally published in 1939 by AA founders Bill W. and Dr. Bob. The book serves as the basic text of AA. There has been a series of reprints and revisions, as well as translations into dozens of languages. The second edition (1955) consisted of 1,150,000 copies. The book is published by Alcoholics Anonymous World Services, Inc. and is available through AA offices and meetings, as well as through booksellers. The 4th Edition (2001) is also freely available online.