@techreport{weko_1132_1,
   author	 = "OTSUKA,Keijiro and PLACE,Frank",
   title	 = "Evolutionary Changes in Land Tenure and Agricultural Intensification in Sub-Saharan Africa",
   year 	 = "2013",
   institution	 = "政策研究大学院大学 / National Graduate Institute for Policy Studies , World Agroforestry Centre",
   month	 = "nov"
}