(1961)International Seminar on Solar and Aeolian Energy International Seminar on Solar and Aeolian Energy (Wash)International Symposium on Solar Energy International Seminar on Software Engineering International seminar on information storage 1971 internation seminar on information storage and retrieval (Jaca)International Seminar on Theoretical Physics International Symposium on Solar Energy (1977)International Coference on Fracture Mechanics and Technology