LDR 00482nam a2200133zu 4500 008 090205n chi d 100 1 _aLee, Thomas H.C. 245 _aA Copper Production Breakthrough in the Song: The Copper Precipitation Process _cLee, Thomas H.C. 650 _aScience -- Copper Production -- Song 773 0 _tJournal of Sung-Yuan Studies _gVol. 25 (1995); p. 153-168" 946 _a 001 IFS45823 999 _c317444 _d317444 952 _70 _c1 _40 _00 _9182071 _yBOOK _10 _d2009-05-14 _aIFS