XIIIesq to Videos • 8 months agoPrimitive Technology: Geopolymer Cement (Ash and Clay)youtu.beexternal-linkmessage-square0arrow-up149arrow-down12
arrow-up147arrow-down1external-linkPrimitive Technology: Geopolymer Cement (Ash and Clay)youtu.beXIIIesq to Videos • 8 months agomessage-square0