000 00278nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aCragg
245 0 _aAdvances in ecological reseach vol.1
260 _bAcademic press
260 _c1962
365 _b44.55
942 _cBK
999 _c199398
_d199398