000 00292nam a2200121Ia 4500
008 170912s9999 xx 000 0 und d
082 _a587 CHO/A
100 _aCHOPRA G L
245 2 _aA CLASS BOOK OF PTERIDOPHYTA
260 _bHARI SINGH AND BROTHERS
_c1965
300 _a231
942 _cTB
999 _c32777
_d32777