The directory of development organizations, listing 70,000 development organizations, has been prepared to facilitate international cooperation and knowledge sharing in development work, both among civil society organizations, academic and research institutions, governments and the private sector.

Based on county-level census data for the German state of Bavaria in 1939 and 1946, we use World War II as a natural experiment to study the effects of sex ratio changes on out-of-wedlock fertility. Our findings show that war-induced shortfalls of men to women significantly increased the...