Hoan thanh thong ke Civil engineering book & Vietnamese

Hey! That tuyet voi, nhung ngay ranh roi vua qua sau khi bao ve minh da hoan thanh booklist cua nhung tai lieu civil engineering book dang co. Thong ke that huu ich giup loai bo nhung book trung lap (hoi bi nhieu) va tra cuu rat nhanh nua. Gio moi biet the gioi da nghien cuu rat sau rat xa..Minh se co gang !