000 00312nam a2200109Ia 4500
008 211214s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aSmith, Guy - Harold.
245 0 _aConservation of natural sourses.
260 _bJohn Wiley & Sons
_aNew York
_c1950
942 _c1
999 _c28995
_d28995