000 00331nam a2200145Ia 4500
008 221026s9999 xx 000 0 und d
082 _a591.5 T53 1953 17002
100 _aN. TIMBERGEN
245 0 _aSOCIAL BEHAVIOR IN ANIMALS /
260 _c1953
546 _aEng.
563 _aHbk.
650 _aZoology
942 _cBook
999 _c1978451
_d1978447