000 00300nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aSithambaranathan (J) etc
245 0 _aEcosystem principles and sustainable agriculture
260 _bScitech
260 _c1999
365 _b300
942 _cBK
999 _c223099
_d223099