000 00293nam a2200121Ia 4500
008 160601s9999 xx 000 0 und d
100 _aTaylor, L R. Ed
_910767
245 _aOptimum population for Britain
260 _aLondon
260 _bInstitute of Biology
260 _c1970
300 _a182
999 _c3472
_d3472