@book{25863,
	author = {SIELECK, WOLFGANG  E and FVENSON, ROBERT  E},
	title = {STRENTHEMBNING PROTECTION OF INTELLECTUAL PROPERTY IN DEVELOPING COUNTRIES: A SURVEY OF THE LITERATURE / },
	publisher = {THE WORLD BANK ، },
	year = {1990},
	address = {[S.N] : }
}