FOSSIL FUELS
CONVENTIONAL
FOSSIL FUELS
CONVENTIONAL
Knoxville International Energy Exposition (KIEE) was held in Knoxville, Tennessee, United States in the year 1982. During the fair, a set of four 20-cent commemorative stamps were issued on April 29, 1982.
'Fossil Fuels', was one of the topic.
'Synthetic Fuels', was another theme.