المؤلفون: Ehrhardt, Hendrik, author.

مصطلحات موضوعية: Electric industries -- Germany -- History -- 20th century., Energy industries -- Germany -- History -- 20th century., Power resources -- Germany -- History -- 20th century., Energy policy -- Germany -- History -- 20th century., Energy storage -- Germany -- History -- 20th century., Energy industries -- Prices -- Germany -- History -- 20th century.