Ninth E. C. Photovoltaic Solar Energy Conference :  proceedings of the International Conference, held at Freiburg, Fed. Rep. of Germany, 25-29 September 1989 / 
edited by W. Palz, G. T. Wrixon and P. Helm 
 - Dordrecht :  Kluwer Academic Pub.,  1989 
 - 1217 p. 
<br/><br/> At head of title: Commission of the European Communities 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Solar cells--Congresses<br/>Photovoltaic power generation--Congresses
<br/><br/><label>LC Class. No.: </label>TK2960  / P47 1989