000 00289nam a2200109Ia 4500
008 220510s1968 xx 000 0 und d
041 _aeng
082 _a591.5
_bTIN
100 _aTinbergen,Niko,
_9777328
245 _aAnimal Behaviour
260 _aNederland:
_bTime LIfe International,
_c1968
999 _c527537
_d527537