TY  - BOOK
AU  - Thygerson,Alton L
TI  - Accidents & disasters: causes and counter-measures 
SN  - 0130009687
U1  - 614.8 THY 
PY  - 1977///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
ER  -