Ecf 6: Fracture Control of Engineering Structures, Proceedings of the 6Th Biennial European Conference on Fracture., Location: Amsterdam, Neth, Patrocinadores: Int Congress on Fracture;Royal Inst for Engineers, Div for Mechanics, Neth;Dutch Electrical Supply Co, Neth;Ministry of Economic Affairs, Neth;Royal Dutch Shell, Neth;et al