@book{31395,
	author = {UGC                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     UGC                                                                                              },
	title = {Student notes on intelligent  Knowledge based systems:},
	publisher = {UGC,},
	year = {1990},
	address = {Colombo:}
}