na INLIS000000000017316 20230701115131 0010-1118017316 230701 g 0 eng The South African fern spores / W.G. Welman WELMAN, W.G. Cape Town : A.A. Balkema, 1970 ix, 110 p. : ill. ; 24 cm. 582.35:581.33(680) 582.35:581.33(680) WEL s FERNS SPORES SOUTH AFRICA 755/70