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- [2] Capital expenditure hits a six-year high [J]. EUROPEAN CHEMICAL NEWS, 1998, 69 (1812): : 14 - 14
- [6] Tuberculosis in the veterans healthcare system: a six-year review and evaluation of programme effectiveness [J]. EPIDEMIOLOGY AND INFECTION, 2000, 125 (02): : 315 - 323
- [7] The Impact of a Six-Year Climate Anomaly on the "Spanish Flu" Pandemic and WWI [J]. GEOHEALTH, 2020, 4 (09):