000 00268nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _a301.17
_bNIK
100 _aNikolayev, A
245 0 _aR & D in social reproduction
260 _aMoscow
_bProgress
_c1975
942 _cBK
999 _c26332
_d26332