Range:
Subjects: Oman; Physical properties; Petroleum
Subjects: Mathematical physics
Subjects: Economic aspects; Mathematical economics
Subjects: Iraq
Subjects: Absorption spectra; Analytical chemistry; Light; Optics; Spectrometers
Subjects: Oxides; Selenium; Zinc oxide
Subjects: Amman; Jordan; Groundwater; Pollution
Subjects: Sana'a; Yemen; Environmental aspects; Urban planning