Potential and Pitfalls of Frugal Innovation in the Water Sector: Insights from Tanzania to Global Value Chains HYVÄRINEN , A. ; KESKINEN, M. ; VARIS, O. Potential and Pitfalls of Frugal Innovation in the Water Sector: Insights from Tanzania to Global Value Chains. In: Sustainability 8(9):888 : URL [Accessed: 18.01.2019] PDF