Fig. 14

Lead isotope ratios plotted against 1/Pb for bronzes of the Warring States period. a206Pb/204Pb versus 1/Pb; b 207Pb/204Pb versus 1/Pb; c208Pb/204Pb versus 1/Pb

Lead isotope ratios plotted against 1/Pb for bronzes of the Warring States period. a206Pb/204Pb versus 1/Pb; b 207Pb/204Pb versus 1/Pb; c208Pb/204Pb versus 1/Pb