The Physics of SiO2 and Its Interfaces covers the proceedings of the International Topical Conference on the Physics of SiO2 and its Interfaces, held at the IBM Thomas J. Watson Research Center, Yorktown Heights, New York on March 22-24, 1978. The book focuses on the properties, reactions, transformations, and structures of silicon dioxide (SiO2). The selection first discusses the electronic properties of vitreous SiO2 and small polaron formation and motion of holes in a-SiO2. Discussions focus on mobility edges and polarons, deep states in the gap, and excitons. The text also ponders on field-dependent hole and exciton transport in SiO2 and electron emission from SiO2 into vacuum. The publication takes a look at the electronic structures of crystalline and amorphous SiO2; band structures and electronic properties of SiO2; and optical absorption spectrum of SiO2. The text also tackles chemical bond and related properties of SiO2; topological effects on the band structure of silica; and properties of localized SiO2 clusters in layers of disordered silicon on silver. The selection is a good reference for physicists and readers interested in the physics of silicon dioxide.