of process water with strict quality requirement Management and labour may be reluctant to work in a ... Air temperature, humidity, sunshine hours, winds, precipitation(강수량), hurricane risk etc □ Each of above ... 영향을 받게 되는 다른 산업 활동에 대한 가계지출과 생산비용의 변화를 추정) Direct survey-based methods (직접 설문조사 방식) The contingent valuation