000 00276nam a22001217a 4500
008 190129b xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a574
100 _a9
101 _aMJE
245 _aAn Introduction to Behavioral Ecology
_cKrebs, J.R
942 _2udc
_cBK
999 _c53896
_d53896