Jansen, W.A.M. Rotor design for horizontal axis windmills by W.A.M. Jansen and P. T. Smulders - Amersfoort Steering Committee on Wind-Energy in Developing Countries 1977 - 58p. - Steering Committee on Wind-Energy in Developing Countries publication 77-1 . Subjects--Topical Terms: WindmillsRotors--Design and Construction