000 00237nam a2200121Ia 4500
100 _aTichenor,H.M..
942 _cBK
654 _a
245 _aSurvival of the fittest
260 _c1921
082 _a575.0162
300 _bHb
_a61,iii
999 _c353291
_d353291
041 _aeng