International Conference on the Hydraulic Transport of Solids in Pipes,5th,Hanover,1978 Internaitonal Conference on the Hydraulic Transport of Solids in Pipes,7th,Sendai,Japan,1980 International Conference on the Hydraulic Transport of Solids in Pipes,3d,Golden,Colo,1974 International Conference on the Hydraulic Transport of Solids in Pipes,4th,Banff,Alta,1976 Pneumotransport 4.4th International conference on the pneumatic transport of solids in pipes International Conference on the Hydraulic Aspectxs of Floods and Flood Control Internaitonal Conference on the Dynamics of Interfaces International conference on the strength of metals & alloys International conference on the applications of the Morsbauer effect International Conference on the Internal & External Protection of Pipes