00346nam a2200121Ia 4500008004100000082001500041100001400056245003300070260002700103300001000130630001800140650006600158211109s9999||||xx |||||||||||||| ||und||  a587bRAS-I  aRashid, A 0aIntroduction to Pteridophyta  bVikasaNew Delhic1978  a282p.  xGeneral Stack  aNatural Sciences &mathematicsvVascular seedless plantsBotany