Iowa state and federal health officials are attempting to determine the ext

Long Title: 
Iowa state and federal health officials are attempting to determine the extent of contamination of Iowa livestock herds by the chemical polybrominatedbiphenyl - is normally used as a fire retardant.
Description: 
(polybrominatedbiphenyl - PBBP)
Location: 
1:01
Citation Date: 
Wednesday, November 20, 1974