Assuming 12 sheets named as per your example 'mmm 2004' with data in say
cells A1:A4 on each sheet to be returned to the summary sheet
Summary sheet:-
B1:M1 = Jan, Feb, Mar, Apr..........
A2:A5 = 1,2,3,4 (represent row numbers of data to be returned from each
sheet)
Cell B2 = =INDIRECT("'"&B$1&" 2004'!A"&$A2)
Copy across B2:M5 and all data will be returned. Dollar signs on the 1 and
the A simply lock those row and column references for when you copy the
formula across the other cells.
use same principle but adjust for your ranges