TY - GENERIC DO - 10.20944/preprints202108.0086.v1 UR - http://dx.doi.org/10.20944/preprints202108.0086.v1 TI - Estimating the Recreational Value of the Abdanan Black Twin Lake: A Contingent Valuation Approach T2 - Preprints AU - Sayehmiri, Ali AU - heidarvand, Atefeh PY - 2021 DA - 2021/08/03 PB - Preprints