000 00279nam a2200109Ia 4500
008 221129s2008 xx 000 0 und d
041 _aeng
082 _a586
100 _aSingh, S.K.'
_91220945
245 _aPtrcridophytha
260 _aNew Delhi
_bCampus Books International
_c2008
999 _c791254
_d791254