Read internal tabel

Hi all

I have internal table wich is contain 500 records,i want read one line record with out looping.pls help me,

i got the frist field using this statment,how to read othe fields.

READ TABLE it_itab1 INTO wa_itab-vgbel1 with key vgbel =

wa_itab-vbeln matnr = wa_itab-matnr.

thakns

kanishka