Industrial energy conservation : a handbook for engineers and managers 2026-02-15T23:22:26+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Reay, D. A. (David Anthony) (Pergamon Press, 1977)