@book { 2640, title = {Der Bergbau Seegraben : 1606 - 1726 - 1964}, publisher = {Montan-Verl.}, year = {1964}, series = {Leobener grĂ¼ne Hefte ; 77}, note = {Literaturverz. S. 52}, author = {Richter, , Wilhelm and Kirnbauer, , Franz} }