00314 am a2200121   4500001000500000005001700005008004100022020001500063040002700078100001800105245003200123260003700155392820260327110127.0      s1997    xr ---------u-------eng d  a0194313484  aGJHKNbczeerdacGJHKN1 aThomson, A.J.10aA Practical English Grammar  aOxfordbOxford Univ. Pressc1997