Ninth E. C. photovoltaic solar energy conference proceedings of the International Conference, held at Freiburg, Fed. Rep. of Germany, 25-29 September 1989 - Palz, W. (Wolfgang), 1937-; Wrixon, G.T. (Gerard T.) (Dordrecht : Kluwer Academic Publishers, 1989)
At head tittle : Commission of the European Communities.
Includes bibliographical references and index.