Christensen, Carl Frederik Albert,  1872-1942 <br/><br/>
Index Filicum :  sive, enumeratio omnium generum specierumque Filicum et Hydropteridum ab anno 1753 ad finem anni 1905 descriptorium, adjectis synonymis principalibus, area geographica etc 

 - Hafniae :  H. Hagerup,  1906 [i.e. 1905-06] 
 - lix, 744 p.; 24 cm. 
<br/><br/> Supplemented by:'Supplementum, 1906-1912' (131, [1] p. 24 cm.) published: Hafniae, H. Hagerup, 1913. Call number: QK523.C58 Suppl. 1  Supplemented by:'Supplément préliminaire pour les années 1913, 1914, 1915, 1916. Publié aux frais de S.A.I. le prince Bonaparte' (60 p. 24 cm.) published: Hafniae, Types Triers bodtrykkeri, 1917. Call number: QK523.C58 Suppl. 2  Supplemented by:'Supplementum tertium, pro annis 1917-1933' (219 p. 24 cm.) published: Hafniae, H. Hagerup, 1934. Call number: QK523.C58 Suppl. 3  Supplemented by:'Supplementum quartum, pro annis 1934-1960. Prepared by Rodolfo E.G. Pichi-Sermolli, with the collaboration of F. Ballard [and others], being the Committee for the Index Filicum of the International Association for Plant Taxonomy. (xiv, 370 p. 25 cm. (Regnum vegetabile, v. 37)) published: Utrecht, Netherlands, International Bureau for Plant Taxonomy and Nomenclature, 1965. Call number: QK523.C58 Suppl. 4 (Regnum vegetabile, v. 37) 
<br/><br/><label>LCCN: </label>07-000548 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ferns<br/>Hydropterideae<br/>Elasticity
<br/><br/><label>LC Class. No.: </label>QK523