. (3ejGOjf Yde GdfaS GdfXQjI hGdJWHjbjIs - . .(3LjdahQO, L(B. (3Hs; (3eQGO, jhSa, eJQLes; Jilford J.B. ((3GdbGgQIs (3OGQ GdeYGQas, 1966)
* (3eQGLY aj BNQ GdcJGHs
Keywords: (3Yde GdfaSs -- (3adSaI hfXQjGJs