<ARTICLE> 5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-END> SEP-30-1998 <CASH> 22,329,915 <SECURITIES> 0 <RECEIVABLES> 45,445,879 <ALLOWANCES> 4,096,000 <INVENTORY> 7,632,703 <CURRENT-ASSETS> 74,749,348 <PP&E> 18,131,263 <DEPRECIATION> 12,459,260 <TOTAL-ASSETS> 94,748,980 <CURRENT-LIABILITIES> 12,607,891 <BONDS> 0 <PREFERRED-MANDATORY> 111,582 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 79,075,142 <TOTAL-LIABILITY-AND-EQUITY> 94,748,980 <SALES> 0 <TOTAL-REVENUES> 151,211,699 <CGS> 129,042,608 <TOTAL-COSTS> 141,838,605 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 10,464,395 <INCOME-TAX> 3,899,000 <INCOME-CONTINUING> 6,565,395 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 6,565,395 <EPS-PRIMARY> .59 <EPS-DILUTED> .57