(3GdGReGJ GdGbJUGOjI h GdGhHFI ai eUQ (B: s (3YUQ SdGWjf GdeeGdjc (B/ s - (3ZGfe (B: (3MGeO RjGfs ((3GdbGgQI (B: s (3GdecJHI GdYGdejI (B: s, 1976)
(3jTJed Ydi GQLGYGJ HHdjhLQGajIs
Keywords: (3OhdI GdeeGdjcs; (3eUQs -- (3JGQjNs -- (3YUQ GdeeGdjc(B1250-1517 (3e`(B)s