00504nam a2200169 a 450000500170000008200160001710000220003324500400005526000320009530000220012763000240014963000160017396400160018999700180020599900170022395200940024020251203091201.0  a512.55bROT  aRotman, Joseph G.  aIntroduction to homological algebra  aAcademic publicationsc1979  a376p.b22cm.cHB.  aHomological algebra  aMathematics  bcdefg_  a34640 LIBSC C  c33009d33009  00104070aPUbPUd1999-12-20l1o512.55 ROTp34640r2026-09-28 15:40:17s2026-09-07yBK