four firm concentration

four firm concentration Firm four four four FOUR. Unconditional Firm hold firm firm是什么意思 firm 是什么意思 firm practice firm-year FIRM Professional Service Firm(PSF) geared firm 和ungeared firm The design of modern architecture concentrates on usefulness rather than decoration为什么concentrat 英语翻译In investigating the robustness of our results,we utilize a control variable(stockof patents obtained in the past four years)that has been shown to be highly correlated with annual firm-level R&D expenses. Conditional offer firm acceptance take a firm hold