(3GTgQ GdePGgH GdeSQMjI (B: s (3hfeGPL ef GTgQ GdeSQMjGJ (B/ s - (3OQjfi NTHIs ((3GdbGgQI (B: s (3GdOGQ GdeUQjI GddHfGfjI , s, 1961)
Keywords: (3GdeSQM (B- (3ePGgHs; (3GdePgH GdSQjGdis; (3GdePgH GdhLhOis