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Dyfyniad Arddull ChicagoAlbrechtsen, S. E. Testing Methods for Seed-transmitted Viruses: Principles and Protocols. Wallingford, UK: CABI Publishing, 2006.
Dyfyniad MLAAlbrechtsen, S. E. Testing Methods for Seed-transmitted Viruses: Principles and Protocols. Wallingford, UK: CABI Publishing, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.