000 00282nam a2200121Ia 4500
041 _aEN
082 _a304.61
_bVAL
100 _aValentey, D.I .
245 0 _aAn Outline theory of Population / D.I.Valentey.
260 _bMoscow : Progress ,
_c1980
300 _a308
942 _cBK
999 _c15599
_d15599