BOSNIAN SERBS ATTACK CROAT ENCLAVE NORTH OF SARAJEVO

USORA, April 13 (Hina) - The Bosnian Croat enclave of Usora, about 100 km north of Sarajevo, was put on general alert at 8 o'clock this morning as Serb artillery pounded the western part of the enclave, the Bosnian Croat news agency Habena said. In the last 24 hours, Serb forces had blasted Croat defence lines in the eastern part of the front with tank fire, Habena quoted Bosnian Croat defence officials as saying. (hina) mm vm 131411 MET apr 95