(3GdeTcdGJ GdGefjI GdeUGMHI dfeh hGdgLQI GdjgG (B/ s - (3MShf , JeGVQ s; (3GdQaGYj , MSjf s ((3GdQjGV (B: s (3GdeQcR GdYQHj ddOQGSGJ GdGefjI hGdJOQjH , s, 1987)
Keywords: (3GdgLQI s