00447nam a22001817a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001500102100002500117245004500142260004400187300002000231650001400251CHAP20220329135937.0971013s1970            r     00010     d  a44488  a45460  a49599  cCHAP  a587.31bT300aTaylor, Thomas M. C.  aPacific Northwest ferns and their allies  aToronto :bUniversity of Toronto,c1970  a247 p.b: ilus.14aHelechos.