الفهرس 
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Abstract
In the present work the becke-line method has been applied to cuperammonium fiberes and ”tricel” cellulose triacetate fiberes. multiple-beam fringes of the fizeau type in transmission and at reflection were used for the determination of the mean reflection indices of cuperammonium fiberes and ”tricel” cellulose triacetate fiberes. These studieswill give a clear picture of the mechanism of dyeing and helps in its control.