|
Lignito y turba |
|
|
Lignito |
|
|
Turba |
|
|
Coque |
|
|
Combustibles gaseosos |
|
|
Gas de hulla, gas de red o gases similares |
|
|
Gas de hulla o gases similares |
|
|
Gas de red |
|
|
Propano y butano |
|
|
Gas propano |
|