Hofmann, Josef.
Piano quetions : answered : a little book of direct answers to two hundred and fifty questions asked by piano students /
Josef Hofmann 
. - Carden Cuty ; New York  : Doubleday, Page & Co,  1914 
. - viii, 183, xiv, 69 p.  ill.  20 cm. 
<br/><br/> Додаток: Piano playing : a little book of simple suggestions.- p. xiv, 69.