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CJ <br />• <br />• <br />Figure Z5. Grouad plater Calcium <br />700 <br />600 <br />500 <br />400 <br />.a <br />m <br />E 300 <br />200 <br />100 <br />0 <br />Dec-95 <br />.. ~ ~. <br />Dec-96 Dec-97 <br />fTR-1.6 -QTR-3 tTR-4 -~kIR-1 <br />Dec-98 <br /> ~ ~ ~ ~ <br /> <br />Dec-88 Dec-89 Dec-90 Dec-91 Dec-92 Dec-93 Dec-99 Dec-95 Dec-96 Dec-97 Dec-98 <br />--F-TR-1.5 -k-TR-3 ~-TR-4 -~WR-1 <br />600 <br />500 <br />~ 400 <br />rn <br />E 300 <br />200 <br />100 <br />0 <br />34 <br />