21.   Fierce duels erupted all around the northern Posavina corridor, a slender but vital Serb supply route linking Serb-held areas of Croatia and Bosnia with Serbia proper.

22.   Fierce artillery duels rocked a vital Serb supply corridor in northeastern Bosnia Wednesday, threatening to draw the powerful Yugoslav army back into the conflict.

23.   Fierce battles gripped northern Bosnia around a key Serb supply corridor on Monday, and U.N. officials warned that food was getting scarce in Sarajevo.

24.   Fighting was reported Sunday around the eastern enclave of Gorazde, in the northwestern Bihac pocket and in the northeast around a key Serb supply corridor.

25.   Fighting also flared in northern Bosnia, near a Serb supply corridor that is the lifeline of their war effort.

26.   Fighting was reported around the eastern enclave of Gorazde, in the northwestern Bihac pocket and in the northeast around a key Serb supply corridor.

27.   Fighting continued in northern Bosnia Saturday, near a Serb supply corridor crucial to their war effort.

28.   From their positions on Igman, government forces have been able to fire on a key Serb supply route south of Sarajevo.

29.   From their positions above Krupac, government forces have been able to fire on a key Serb supply route south of Sarajevo.

30.   From their positions above Krupac, government forces have been able to fire on a Serb supply route south of Sarajevo.