CRYPTOGAMIC CRUSTS OF SEMIARID AND ARID LANDS OF NORTH AMERICA

1993 ◽  
Vol 29 (2) ◽  
pp. 140-147 ◽  
Author(s):  
Jeffrey R. Johansen
2009 ◽  
Vol 41 (10) ◽  
pp. 2069-2074 ◽  
Author(s):  
Tanya Soule ◽  
Ian J. Anderson ◽  
Shannon L. Johnson ◽  
Scott T. Bates ◽  
Ferran Garcia-Pichel

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