(3ePcQGJ eMeO QjGV (B:s (3GdHMK Yf GdSdGe h GdUQGY aj GdTQb GdChSW (B/s - (3QjGV, eMehOs ([(3Ohf ecGf(B] :s (3deDSSI GdYQHjI ddOQGSGJ ,s, 1981)
Keywords: (3QjGV s; (3eMeOs; (3ePcQGJ s