1 “...The differences in financial systems between industrial and developing countries are pronounced...”

2 “... casualties instead of being self-reported. The analysis suggests that there are no significant differences...”

3 “.... Difference-in-difference estimations indicate that the ruling led to reductions in river pollution and one...”

4 “... in international trade on fertility. It builds a model in which industries differ in the extent to which they use...”

5 “... between religious groups, but also across caste groups. These groups also differ with respect to socio...”

6 “.... No significant difference in the prevalence of reported cancer is detected between communes with some degree...”

7 “...-has been a basic building block of many societies in different parts of the world. This paper argues...”

8 “... with soap at these times is low, and there isn't any difference between the treatment and control groups...”