"Poor Economics" is a good book about that topic, based on field studies of the authors. I found the investigation of economics at those margins very interestin

"Poor Economics" is a good book about that topic, based on field studies of the authors. I found the investigation of economics at those margins very interesting. Most concepts of small business etc as people who have grown up in the West don't work anymore at those margins, because people have to pay enormous interest rates, shops can't really buy stock etc. http://www.pooreconomics.com/ http://www.pooreconomics.com/ and http://www.amazon.com/Poor-Economics-Radical-Rethinking-Poverty/dp/1610390938 http://www.amazon.com/Poor-Economics-Radical-Rethinking-Pove...