use of ROWNUM

Then I have this query result:

>select * from analisi_ricovero WHERE id_ric=82

ID_ANL	ID_RIC	                       INDATA	                  VALORE
  41	       82	     29-APR-07 11.54.17,000000 PM	43
  41	       82	     29-APR-07 11.54.10,000000 PM	 5

Now I only need ID_ANL, ID_RIC and INDATA with MAX INDATA value, how can obtain it? Received on Sat May 05 2007 - 08:35:37 CDT