000			00348nam a2200157 4500
008			160616s1984 000 0
245			_aElementary order
100			_aPetryanov, I V
100			_aTrifonov, D N
260			_aMoscow
260			_bMir publishers
260			_c1984
300			_a154
942			_cBK _2BK26243
080			_a51 PET
999			_c26243 _d26243