This book appears to be an educational children's or general reference book about different types of fuel and energy. It includes information about traditional energy sources like charcoal (as seen in the open page), how they are made and used, and possibly covers other energy forms including modern and renewable sources.
Part of the "World of Knowledge" series.
Illustrated with real-life photographs and informative text.
Designed for educational purposes (likely for middle school level or curious young readers).
