00690nam a22002537a 4500 CHAP 20220329140216.0 971013s1967 r 00010 d 48576 49548 53697 CHAP 517.3 V4 Vekua, N. P. 118345 Systems of singular integral equations Groningen : Noordhoff, 1967 216 p. BATCH-UPD 10 20130110 UCH01 1106 CONVERSION 10 20130109 UCH01 1326 Integrales. 59502 BK LIBRO 517.3 V4 BC LIBRO 33724000129573 LIBRO 15914 53697 D i 48576 48576 0 0 ddc 0 2 0 GRAL BC BC PA_GRAL 2019-12-31 LIBRO 0 517.3 V4 33724000129573 2019-12-31 00:00:00 2019-12-31 LIBRO