por European Symposium on Earthquake Engineering (4 : 1972 : Londres) | Bulgarska akademiia na naukite.
por Symposium On Earthquake Engineering 1969.
por Symposium On Earthquake Engineering, 4 India, 1970.
por Symposium On Earthquake Engineering (1965 : University Columbia) | University of British Columbia. Civil Engineering Department.
por Symposium On Earthquake Engineering 1965 | University of British Columbia. Civil Engineering Department.
por Symposium On Earthquake Engineering, 5 1974 | Roorkee, India. University, School Of Research And Training In Earthquake Engineering.
por Japan National Symposium on Earthquake Engineering (1962 : Tokyo, Japon) | Nihon Kenchiku Gakkai.
por European Symposium on Earthquake Engineering (8 : 1986 : Lisboa) | Laboratorio Nacional De Engenharia Civil.
por Symposium On Earthquake Engineering (2 : 1962) | University of Roorkee. School of Research and Training in Earthquake Engineering.
por Symposium On Earthquake Engineering 1966.