<ARTICLE>                                                 5
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<CURRENCY>                                           U.S. DOLLARS
       
                                                      
<PERIOD-TYPE>                                           9-MOS
<FISCAL-YEAR-END>                                    DEC-31-1998
<PERIOD-START>                                       JAN-01-1998
<PERIOD-END>                                         SEP-30-1998
<EXCHANGE-RATE>                                                        1
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<SECURITIES>                                                           0
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<ALLOWANCES>                                                   (723,900)
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<DEPRECIATION>                                                67,028,828
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<PREFERRED>                                                            0
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<EPS-PRIMARY>                                                       0.60<F1> 
<EPS-DILUTED>                                                       0.59

<FN>
<F1>
EPS-BASIC
</FN>