000 00308nam a2200133Ia 4500
008 221001s1969 xx 000 0 eng d
082 _a910.32 PET
100 _aPetersen, William
245 0 _aPopulation
250 _a2nd ed.
260 _aNew York
_bMacmillan
_c1969
300 _a735p.
942 _2ddc
_cBK
999 _c29008
_d29008