Zambia : energy in the rural economy : a pilot study of possibilities of improving the energy infrastructure of farming households in Magoye area / Jan van den AkkerGeothermal energy : a general outline of earth heat, its exploitation and prospects / Jan van den Akker ; Marty Monteiro (ed.)Climate change in north-south perspective : greenhouse gas emissions, climate change impacts and response options / J.H.A. van den AkkerAardenergie : een algemeen overzicht van aardwarmte ; exploitatie, toepassing en vooruitzichten / Jan van den Akker ; Marty Monteiro (ed.)Climate change and developing countries : priorities for policy research in the Netherlands / J.H.A. van den Akker, F.D.J. NieuwenhoutMarketing study for the introduction of compact fluorescent lamps / J.H.A. van den Akker, Th. BakenImpacts of the introduction of compact fluorescent lamps / J.H.A. van den Akker