Thygerson, Alton L. Accidents and disasters : causes and countermeasures / Alton L. Thygerson. - Englewood Cliffs, NJ : Prentice-Hall, 1977. - xvi, 411 p. : ill. ; 23 cm. ISBN: 0130009687 Subjects--Topical Terms: Accidents--United States.Safety education.Accidents--Prevention.