"Electric power production Periodicals." . . "Energy conservation." . . "Electric power production." . . "Energietechnik" . . . . . . . . "Energy technology : generation, conversion, storage, distribution" . "Energy technology : generation, conversion, storage, distribution"@en . . . "Periodicals"@en . . . . "Periodicals" . . . . . . . . . . "Zeitschrift" . "Energy technology (Weinheim, Germany), (Print)"@en . "Energy technology (Weinheim, Germany), (Print)" . . . . . "Energy technology (Weinheim an der Bergstrasse, Germany : Online)"@en . . . . "Electronic journals"@en . . . . "Energy technology generation, conversion, storage, distribution" . . "Energy conservation Periodicals." . . "Energy storage." . . "Energy storage Periodicals." . . "Electronic journals" . .