000 00327nam a2200133Ia 4500
008 220721s1961 xx 000 0 und d
041 _aeng
082 _a598.2(931)
100 _aKennedy, J.S.
245 _aInsect polymorphism
260 _aLondon
_bRoyal Entomological Society
_c1961
300 _a115P.
999 _c77324
_d77324