00000nam a2200000 a 4500 20251203091953.0 0444863613 530.143 UME Umezawa, H. Thermo field dynamics and condensed states, H.Umezawa, eng New York, North-HollaNew Delhi, US 1982 xvi,591p. 24 cm. Quantum Field theory Matsumoto, H. Tachiki, M. ENG _ 87208 LIBSC C 59348 59348 0 0 0 0 PU PU 1998-07-16 0 530.143 UME 87208 BK