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Friday, 16 August 2013

16th august 2013 BCE Class 6 ,7 , 8 Slides

CEMENT -OPC,PPC, WHITE CEMENT, PSC & GRADES OF CEMENT
ROCKS- Classification

download slides from links below

Class 6th link GRADES OF CEMENT
class 7th link CEMENT -OPC,PPC, WHITE CEMENT, PSC 
Class 8th Link ROCKS- Classification

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