000 00330nam a2200121Ia 4500
008 161118s2016 xx 000 0 und d
082 _a664 JON-S
100 _aJones J.G.W.
245 0 _aSystems Theory Aplied to Agriculture and the Food Chain
260 _aLondon
_bElsevier applied science
_c1990
300 _a365
942 _2ddc
999 _c34559
_d34559