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Dyfyniad Arddull ChicagoRuhl, W., and A. Vancura. Strong Interaction Physics: International Summer Institute on Theoretical Physics in Kaiserslautern, 1972. New York: Spriger-Verlag, 1973.
Dyfyniad MLARuhl, W., and A. Vancura. Strong Interaction Physics: International Summer Institute on Theoretical Physics in Kaiserslautern, 1972. Spriger-Verlag, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.