By June 1997, Witnesses in Belgium, France, and Switzerland had donated 1,100 pounds [500 kg] of medicine, 10 tons of high-protein biscuits, 20 tons of other food, 90 tons of clothing, 18,500 pairs of shoes, and 1,000 blankets —at a cost of nearly $1,000,000.
테레프탈산 제조에서의 결정화 및 고액 분리 공정jw2019 jw2019