Rice, corn and coffee farmers are all being hurt.
David, the youngest, is now a coffee farmer in Tanzania.
The book, by studying coffee farmers in Mexico, offers an investigation of the social, economic, and environmental benefits of fair trade.
The turmoil in the industry has been catastrophic for many Latin American coffee farmers.
They claimed this could result in denying Ethiopian coffee farmers potential annual earnings of up to £47m.
The company promised this month to provide $1 million in financial support to coffee farmers.
The economy consists primarily of coffee farmers and workers from the surrounding area.
Small coffee farmers alone could productively use over $1 billion in credit, if it was available on reasonable terms.
This program also supported research, extension work, and training programs to upgrade coffee farmers' skills and understanding of their role in the economy.
The common resolution, however, dares to recommend an increase in the power of coffee farmers on the market.