FIRST EDITION: Green cloth covered book with gilt titles on the front cover and the spine. The spine ends are lightly bumped as are the two lower corners of the front and rear covers. There is no dust jacket. Internally the book is clean, bright and tightly bound. It is illustrated with many tables, graphs, line drawings and equations. The authors are: Frederick A Zenz and Donald F Othmer, the consultant editor was Charles R Wilke. The book was published by the Reinhold Publishing Company of New York and by Chapman & Hall of London in 1960. This is a very heavy book for its size.