Steenrod, N. E. (1962). Cohomology operations. Princeton, N.J.: Princeton University Press.
Trích dẫn kiểu ChicagoSteenrod, Norman Earl. Cohomology Operations. Princeton, N.J.: Princeton University Press, 1962.
Deismireacht MLASteenrod, Norman Earl. Cohomology Operations. Princeton, N.J.: Princeton University Press, 1962.
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