Gerald Foley & Patricia Moss 
Stoves and Trees [PDF ebook] 
How Much Wood Would a Woodstove Save If a Woodstove Could Save Wood?

Originally published in 1984, Stoves and Trees asks whether better stoves really help the two billion people in the developing world who rely on wood and charcoal for cooking and heating their homes. It also asks if improved stoves actually save fuel and if they can help slow down tropical deforestation. The book not only examines newer stoves but also ascertains how people buy, collect and use wood in the developing world. It finds that most forests are cleared for timber or farmland not fuelwood and explains why stoves which show 50% energy savings in European laboratories often save little or none in village homes.