<ARTICLE> 5
       
                                                     
<PERIOD-TYPE>                   3-MOS                      9-MOS
<FISCAL-YEAR-END>                   DEC-31-1996                DEC-31-1996
<PERIOD-START>                      JUL-01-1997                JAN-01-1997  
<PERIOD-END>                        SEP-30-1997                SEP-30-1997  
<CASH>                                2,111,187                  2,111,187
<SECURITIES>                                  0                          0
<RECEIVABLES>                         9,313,369                  9,313,369
<ALLOWANCES>                            901,674                    901,674
<INVENTORY>                              51,053                     51,053
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<PP&E>                               48,404,843                 48,404,843
<DEPRECIATION>                       11,924,972                 11,924,972
<TOTAL-ASSETS>                       51,125,002                 51,125,002
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<COMMON>                                 46,231                     46,231 
<OTHER-SE>                           36,550,808                 36,550,808
<TOTAL-LIABILITY-AND-EQUITY>         51,125,002                 51,125,002
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<TOTAL-REVENUES>                     13,053,085                 35,613,825
<CGS>                                 7,525,026                 19,619,983
<TOTAL-COSTS>                         7,525,026                 19,619,983
<OTHER-EXPENSES>                      4,576,205                 10,640,031
<LOSS-PROVISION>                        643,528                    643,528
<INTEREST-EXPENSE>                      158,243                    318,937
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<EPS-PRIMARY>                               .05                        .65
<EPS-DILUTED>                               .05                        .65