na INLIS000000000017280 20230701092553 0010-1118017280 230701 g 1 eng Taxonomic fern-studies III-V / Carl Christensen CHRISTENSEN, Carl 73 p. : ill. ; 24 cm. 582.35 582.35 CHR t Kobenhavn : H. Hagerups, 1937 Reprinted from Dansk Botanisk Arkiv Bd. 9 Nr. 3 (1937): 1-73. FERNS mfn-19110