Paulsrud, Per <br/><br/>
The nostoc sysmbiout of lichens :   deversity, specificity and cellular modifications 

 - Uppsala:  Acta Universitatis Upsaliensis,  2001 
 - 55p.  ill.  24cm. 
<br/><br/><label>ISBN: </label>91-554-5136-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lichens
<br/><br/><label>LC Class. No.: </label>PAM QK581.P8