الفترة:
Subjects: Heavy minerals; Industrial chemistry; Environmental aspects; Food waste; Tanning
Subjects: Building materials; Reinforced concrete; Concrete
Subjects: Temperatures; Cement
Subjects: Fly ash
Subjects: Alkalies; Commerce; Industries
Subjects: Concrete; Construction; Industries
Subjects: Elastomers; Mechanical properties; Concrete
Subjects: Building materials; Rocks; Yemen; Freemasonry
Subjects: Temperatures; Cement; Concrete