Theory of condensed matter: lectures presented at an international course organized by and held at the International Centre for Theoretical Physics, Trieste, from 3 October to 16 December, 1967. Directors: F. Bassani, G. Caglioti and J. Ziman. Contributions by E. Antončík [and others. With diagrs., and figures] International Course on the Theory of Condensed Matter, Trieste, 1967. Bassanti, Giuseppe Franco, 1929- Caglioti, Giuseppe. Ziman, J. M. (John M.), 1925-2005. Antončík, Emil. International Centre for Theoretical Physics. Matter. Lattice theory. QC173 .I5472 1967 541.2 INT "STI/PUB/205." Includes bibliographies. Vienna, International Atomic Energy Agency, 1968. 1968. 1968 Text 1015 p. eng Proceedings series International Atomic Energy Agency. Proceedings series.