000 00403nam a2200121Ia 4500
008 160316s9999 xxu||||| |||| 00| 0 eng d
100 _aDavid, David E Ed.
245 _aBehaviour as an ecological factor
260 _aPennsylvania
_bDowden
_c1974
300 _aXV, 390p
650 _aAnimal ecology
999 _c13022
_d13022