Home › Authors › Duff and Phelps Staff 👤 Duff and Phelps Staff 4 books Books by Duff and Phelps Staff 2017 International Valuation H 2017 International Valuation Handbook 2017 2016 Valuation Handbook 2016 Valuation Handbook 2016 Valuation Handbook 2016 2016 2015 Valuation Handbook 2015 Valuation Handbook 2015