TY - GENERIC DO - 10.20944/preprints201712.0121.v1 UR - http://dx.doi.org/10.20944/preprints201712.0121.v1 TI - Agricultural Economic Loss Calculation Caused by the Different Protection Levels of River Ecological Basic Flow T2 - Preprints AU - Cheng, Bo AU - Li, Huaien PY - 2017 DA - 2017/12/18 PB - Preprints