List of Articles WTP Open Access Article Abstract Page Full-Text 1 - Estimated conservation value of protected area with contingent valuation method (CVM) and Analytic hierarchy process (AHP) mohamad Arab Yabarati fatemeh karimi organi 10.22034/jest.2019.38828.4570 Open Access Article Abstract Page Full-Text 2 - Investigation and determination of influential factors on small industries’ willingness to pay (WTP) in order to reduce the environmental pollutions (Case study: Sari County) Hamid Amirnejad Hamed Rafiee Open Access Article Abstract Page Full-Text 3 - Studying some of the qualitative properties and concentration of heavy metals in dried sewage sludge from Shahin-Shahr WWTP in Isfahan Hamid Reza Rahmani Masoud Moayyeri Zohreh Mazaheri Kouhanestani Narjes Khodabakhsh Hossein Sharifi Open Access Article Abstract Page Full-Text 4 - Determination of Recreational Value of Vashi Strait and Savashi Waterfall in Firouzkooh hamidreza Arbab Teimoor mohamadi hosein esfandiar Open Access Article Abstract Page Full-Text 5 - ارزش اقتصادی برنج ارگانیک یدالله بستان احمد فتاحی اردکانی محمدرضا تابش Open Access Article Abstract Page Full-Text 6 - Assessment of Rural Farming Households WTP for Fertilizers and Agrochemicals in Kwawara State, Nigeria Emmanuel Akinboboye Fadipe Ademoye A.A., Adigun Olayinka Animashaun Jubril Open Access Article Abstract Page Full-Text 7 - Investigation of the Potential Market and Estimation of WTP for Insurance of Pistachio Tree Trunk (Case Study Rafsanjan-Iran) Mostafa Baniasadi Saeed Yazdani Habib Allah Salami