000 00363nam a2200145Ia 4500
999 _c61346
_d61346
005 20220527093531.0
008 180710s9999 xx 000 0 und d
020 _a61917
082 _a515.33
_bBOL
_223
100 _aBOLTYANSKY, V.G.
245 _aDifferentiation explained /
_c[by] V.G.Boltlyansky
260 _a[s.n.]
_bS.l.]
_c0
300 _a62 p.
942 _cR