Hardcover. Condition: UsedVeryGood. Hardcover, proceedings of the IIASA/IFAC Symposium on Modeling of Large-Scale Energy Systems, February 25-29, 1980; Volume 12 of the HASA Proceedings Series. Light fading, light shelf wear to exterior; corners bumped; former owner's stamp on inside front board; otherwise in very good condition with clean text, firm binding.