000 00470nam a2200181Ia 4500
008 150909s9999 xx 000 0 und d
041 _aEnglish
082 _a580
082 _bNP'W/FE
100 _aBower F O
100 _eAuthor
245 _aFerns treated comparatively with a view to their natural classifaction
260 _bToday and Tomarrow's Printers and Publishers
260 _c1979
650 _aBotany
650 _aPlant science
942 _cBK
999 _c248872
_d248872