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- [28] PRIVATE RESEARCH EXPENDITURE IN THE UNITED-STATES INDUSTRY IN 1977 IPW BERICHTE, 1979, 8 (06): : 68 - 70
- [29] ADVANCES AND APPLICATIONS IN UNITED-STATES THERMAL SPRAY TECHNOLOGY .2. THE MARKET AND RESEARCH-AND-DEVELOPMENT POWDER METALLURGY INTERNATIONAL, 1991, 23 (04): : 231 - 236