Kröger F. A., . (1964). The chemistry of imperfect crystals. [s.l.]: [s.n.].
Kröger F A, . 1964. The chemistry of imperfect crystals. [s.l.]: [s.n.].
Kröger F A, . The chemistry of imperfect crystals. [s.l.]: [s.n.]. 1964.