000 00271pam a2200121 a 4500
020 _c
041 _aeng
100 _aA.Nikolayev.
245 _aR&D In Social Repnoduction
_hTextual Documents
260 _a[s.l]:
_bProgress Publishers
300 _a355p.
930 _a15660
999 _c92560
_d92560