1. World Development Indicators 2015
2. The state of the poor: Where are the poor, where is extreme poverty harder to end, and what is the current profile of the world's poor
3. Impact of access to credit on agricultural productivity: Evidence from smallholder cassava farmers in Nigeria
4. Impact of efficient irrigation technology on small farmers
5. Increasing crop productivity to meet global needs for feed, food, and fuel;Edgerton MD;Plant Physiol