i   20 Nov 1995 16:43bfbageexpnobstAge10U%9.0g%9.0g%9.0g%9sggelabgelabAge employM(=Fq~Bp@Exp. nasalM(=Fq~Bp@Obs. No. nasal ca.q~Bp@bs. No. nasal ca.q~Bp@@<20A4 20-24AD( 25-29@H30-34#@\)>=35