=LDR 22 4500 =001 1471 =082 04$a1996 DOW =100 1\$aDowse, Jennifer =245 10$aEdaphic factors influencing the distribution of Asplenium septentrionale, Asplenium trichomanes and Asplenium ruta-muraria =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c1996 =650 \0$aTheses =852 \\$bGeography Basement$h1996 DOW