00278nam a2200109Ia 450000500170000000800410001708200180005810000170007624500370009326000280013030000100015820260205054433.0260111s9999||||xx |||||||||||||| ||und||  a587.02  Su77M  aSuresh Kumar 0aManual of practical pteridophyta  aNew DelhibCampusc2005  a110p.