British Plant Communities.  Vol. 2,  Mires and Heaths / 
Ed. J. S. Rodwell [et al.]. 
 - Cambridge :  University Press,  1991. 
 - X, 628 s. :  rys. ;  26 cm. 
<br/><br/>Bibliogr. 
<br/><br/><label>ISBN: </label>0521391652