(PDF) دراســــــــة تحــــلــیلیــــة وتکنولوجـــــیــة لــنـظـــم
Glass blocks have a great importance for use in architecture and have a long history. The stages of manufacturing have evolved since the beginning of the appearance in 1800's in the form of-manufacturing the first half of the production until it reached the current known form, which works through the light through which provides visual hides.