Document Type : Original Article
. (1999). . Library and Information Sciences, 2(3), 172-174.
. "", Library and Information Sciences, 2, 3, 1999, 172-174.
. (1999). '', Library and Information Sciences, 2(3), pp. 172-174.
, "," Library and Information Sciences, 2 3 (1999): 172-174,
. . LIS. 1999;2(3):172-174 (In Persian).
