000 00259nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aYADAV (PS);SINGH (JS)
245 0 _aProgress in ecology
260 _cNIL
365 _b0
650 _aNIL
942 _cBK
999 _c95144
_d95144