%0 Book %E Fridrich, Christian %E Heinrich, Kati %E Jekel, Thomas %E Keller, Lars %E Koller, Alfons %E Lieb, Gerhard %E Pichler, Herbert %D 2013 %8 Array %C Graz, Innsbruck, Linz, Salzburg, Wien %T GW-Unterricht Nr. 131 (3/2013) %7 2019/01/28/