Judul asli :"Prestressed concrete"
No Inv.: 90752-90756/P/Perp/05/5c
No Inv.: 114605/S/Perp/08/1c
No Inv.: 117440,117442/P/Perp/09/2c
No Inv.: 118698-118700/P/Perp/09/3c~123877-123881/P/Perp/10/5c
No Inv.: 118883-118888/P/Perp/09/6c
No Inv.: 1199155-119157/P/Perp/09/3c
No Inv.: 119158-119160/P/Perp/09/3c~123967-123971/P/Perp/10/5c
No Inv.: 120468/SM/Perp/09/1c
No Inv.: 122832-122836/P/Perp/10/5c