BLASDELL, Robert F. <br/><br/>
A monographic study of the fern Genus Cystopteris / 
by Robert F. Blasdell. 
 -- Geneve :   Conservatoire Botanique,   1963 
 - 102 p. -- 
<br/><br/> Separata de : Memoirs fo The Torrey Botanical Club. Vol. 21, n. 4 (1963) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Atiriáceas<br/>Cystopteris<br/>Helechos<br/>Pteridofitos
<br/><br/><label>Universal Decimal Class. No.: </label>582.35