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1 - Graded ring theory
Năstăsescu, Constantin (1943-....)   /   Oystaeyen, F. Van (1947-....)

Cote : [16 NAS 82]

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2 - Graded and filtered rings and modules
Năstăsescu, Constantin (1943-....)   /   Van Oystaeyen, Freddy M. J. (1947-....)

Cote : [16 NAS 79]