(3GQJQjG GdMOjKI (B1557-1941 / s - (3MQGR, QLH, s ([(3GdbGgQI, eUQ(B] : s (3LGeYI GdOhd GdYQHjI, GdefXeI GdYQHjI ddJQHjI hGdKbGaI hGdYdhe, eYgO GdHMhK hGdOQGSGJ GdYQHjI (B974.s, 1974)
(3jJVef EQLGYGJ HHdjhLQGajI (B: (3UaMI (B235-240.s
Keywords: (3GQjJQjGs -- (3JGQjNs -- (3GdbQf (B19.s; (3GQjJQjGs -- (3JGQjNs -- (3GdbQf (B20.s; (3GQjJQjGs -- (3SjGSI hMcheIs -- (3GdbQf (B19 -20.s