00314nam a2200109Ia 4500008004100000020001800041082001400059100002900073245005500102260003900157300000800196190710s9999    xx            000 0 und d  a81-272-5767-5  a587 M896I  aMukherjee, Rabindra Nath 0aIntroduction to vascular cryptogams : pteridophyta  aLudhianabKalyani Publishersc2009  a362