TY - JOUR T1 - On the valuation of ‘external effects’ in project appraisal JO - Project Appraisal PY - 1989/01/01 AU - Cook P AU - Mosley P ED - DO - DOI: 10.1080/02688867.1989.9726724 PB - Informa UK Limited VL - 4 IS - 3 SP - 143 EP - 150 Y2 - 2024/12/22 ER -