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Vimala P., . and Othman A.B., . and Salbiah H., . and Aminuddin B.Y., . and Ruwaida M., . (1998) Comparison of palm oil mill effluent and chicken manure as organic amendments for cabbage cultivation in the highlands. [Proceedings Paper]
Heng C.K., . and Loke W.H., . and Sivapragasam A., . and Lee C.S., . and Ruwaida M., . and Syed A.R., . (1994) NEEM - a potential biopesticide for the control of Chromatomyia horticola Goureau in sweetpeas Pisum sativum. [Proceedings Paper]
Sivapragasam A., . and Lim G.S., . and Ruwaida M., . (1985) Experimental trials of an integrated pest management programme for Plutella xylostella L. [Proceedings Paper]