. . . "Fossil fuels and biofuels" . . . "Fossil fuels and biofuels"@en . . . . "Fossil fuels & biofuels" . "Fossil fuels & biofuels"@en . "Juvenile works"@en . . "Juvenile works" . . . "Energy - Fossil fuel - Biomass energy - Biofuels."@en . . . "This book defines fossil fuels, discusses how biomass energy provides biofuels, and explains why the world has growing energy needs." .