Holden, J. H. W. (1984). Crop genetic resources: Conservation and evaluation. George Allen And Unkin.
Dyfyniad Arddull ChicagoHolden, J H W. Crop Genetic Resources: Conservation and Evaluation. Boston: George Allen And Unkin, 1984.
Dyfyniad MLAHolden, J H W. Crop Genetic Resources: Conservation and Evaluation. George Allen And Unkin, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.