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Shanmugavelu S., . and Soo S.P., . and Joseph J.R., . (1993) Preliminary observation on the effect of spreading water on the roof of a farrowing barn. [Proceedings Paper]
Ong H.K., . and Soo S.P., . Utilization of livestock wastes for biogas production. pp. 71-78. ISSN 0127-7952