ebrary, Inc, Van Emden, H. F., & Harrington, R. (2007). Aphids as crop pests. CABI.
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Dyfyniad Arddull Chicago
ebrary, Inc, Helmut Fritz Van Emden, and R. Harrington. Aphids as Crop Pests. Wallingford: CABI, 2007.
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Dyfyniad MLA
ebrary, Inc, et al. Aphids as Crop Pests. CABI, 2007.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.