@misc{Holzmüller_Gustav_(1844–1914)_Methodisches,
 author={Holzmüller, Gustav (1844–1914)},
 howpublished={online},
 publisher={B. G. Teubner (Lipsk).},
 language={niemiecki},
 type={podręczniki akademickie},
 title={Methodisches Lehrbuch der Elementar-Mathematik. Tl. 1.},
 keywords={matematyka 19w., geometria, planimetria, arytmetyka, trygonometria, stereometria},
}