A nationally recognized, best-selling reference work. An easy-to-use, comprehensive encyclopediaÓ of today's occupations & tomorrow's hiring trends. Describes in detail some 250 occupations -- covering about 104 million jobs, or 85% of all jobs in the U.S. Each description discuses the nature of the work; working conditions; employment; training, other qualifications, & advancement; job outlook; earnings; related occupations; & sources of additional information. Revised every 2 years.