00370nam a2200109 a 450000500170000008200190001710000210003624500710005726000610012830000210018949000500021020251203091555.0  a512.4,bD, hoc  aHochster, Melvin  aTopics in the Homosogical theory of modules over commutative rings  aRhode IslaNew DelhibAmerican Mathematical societyc1975  avii, 75p, 23 cm.  aRegional conference series in mathematicsd24