Singer, Rolf. <br/><br/>
Keys for the determination of the Agaricales / 
Rolf Singer 
 - einheim :  Cramer,  1962. 
 - 64 p. ;  24 cm. 
<br/><br/> Published also in his The Agaricales in modern taxonomy. 2nd ed. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mushrooms.<br/>Mycology--Classification.<br/>Agaricales.
<br/><br/><label>Dewey Class. No.: </label>P 589.222 S56