00429nam a2200145 a 450000500170000002000170001708200160003410000230005024500400007325000120011326000540012530000210017949000490020050000340024920251203112124.0  a978052116998  a512.55bWEI  aWeibel, Charles A.  aIntroduction to homological algebra  a3rd ed.  aNew DelhibCambridge University Pressc1994-R2010  a450p.c35cm.bPB  aCambridge studies in advanced mathematics 38  aincludes references and index