000 | 00427nam a2200109Ia 4500 | ||
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008 | 160615s9999||||xx |||||||||||||| ||und|| | ||
008 | 160616s 000 0 | ||
100 | _aUSSR, Academy of sciences | ||
245 | _aWorks of the international symposium on nonlinear oscillations, 2 vols. | ||
942 |
_cBK _2BK27943 |
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080 | _a534.01 USSR | ||
999 |
_c27943 _d27943 |