Internatioanl Symposium on Wind Energy Systems.Cambridge,Eng.1976 Internatioanl Symposium on Wind Energy Systems,3rd.lyngby,1980 H.S.Stephens, Internatioanl Symposium on Wind Energy Systems.Cambridge,Eng.1976 Internatioanl Symposium on Wind Energy Systems(4th:1982:Stocklolm) International symposium on mining research Proceedings of the Internatioanl Sympoisum on Wind Energy Systems,Sept.7-9,1976,Cambridge International Symposium on Equine Reproduction,Cambridge,1974. International Symposium on Fluid Power,6th,Cambridge,1981 International Symposium on High Energy Spin Physics(6th:1984:Marseille) International Symposium on Synergetics