31. This preaching involved distributing literature in exchange for voluntary contributions . 32. The proposal would allow additional voluntary contributions up to $ 5, 000 a year. 33. It acknowledges individuals who have made a voluntary contribution to the arts in England. 34. It is probably just his / her voluntary contribution to the improvement of Wikipedia. 35. These massive repatriation efforts are supported by voluntary contributions by donor nations . ( eo) 36. The icons and frescoes were created thanks to voluntary contributions of local businessmen and citizens. 37. Interestingly, Arabeyes relies on voluntary contributions by computer professionals and enthusiasts scattered across the globe. 38. More critically, such voluntary contributions cannot be used to hire inspectors, who must be independent. 39. About 95 percent of that comes from voluntary contributions . 40. From 1985, visitors were asked to make voluntary contributions .
