(3CJLGgGJ LOjOI eY GSQGFjd (B.s - (3Zdi QTjO TYK s ((3eUQ (B:s (3eQcR ELGQI GdfTQ hGdJhRjY (B,s, 1969)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3YdGbGJ SjGSjI s; (3UQGYGJ OhdjI s