KAJIAN MELIPUTI STRUKTUR, TABURAN ELEKTRON DAN KECACATAN DALAM HABLUR SERTA KESAN MEREKA KE ATAS KEKONDUKSIAN, TINDAKBALAS PEPEJAL DAN PERMANGKINAN.((THE STRUCTURE, ELECTRONIC DISTRIBUTION AND DEFECTS IN CRYSTALS WOULD BE DISCUSSED IN RELATION TO THE CONDUCTIVITY, SOLID STATE REACTIONS AND CATALYSIS.))