000 00280nam a22000857a 4500
008 230421s1974 us ||||| |||| 00| 0 eng d
100 _aMorton, C. V.
_9265606
245 _aWilliam Roxburgh's Fern Types /
_cC. V. Morton.
264 _aWashington :
_bSmithsonian Institution Press,
_c1974.
999 _c671330
_d671328