The Manual of Steel Construction Allowable Stress Design 9th Edition 1991 is a comprehensive textbook authored by the American Institute of Steel Construction. This revised edition covers a wide range of topics within the field of technology and engineering, specifically focusing on construction and structural design. With 1144 pages of valuable content, this hardcover book is suitable for adult education and technical levels, providing crucial information for those working in the steel construction industry. The manual is written in English and serves as a valuable resource for professionals seeking to enhance their knowledge and skills in this specialized field.