Igikorwa cyose cyibikorwa bya gypsum ninzira igoye.Intambwe nyamukuru zirashobora kugabanywamo ibice binini bikurikira: agace ka pisitori ya gypsumu, agace kiyongereyeho, ahantu hiyongereyeho amazi, ahantu havanze, ahantu hashingiwe, ahantu h’icyuma, kumisha ni ...
Soma byinshi