Training Course on Soil Erosion Sedimentation Control and Monitoring( 1988 : Laguna, P. (1988). Proceedings of the Training Course on Soil Erosion Sedimentation Control and Monitoring. Laguna, Philippines : [s.n.].
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Training Course on Soil Erosion Sedimentation Control and Monitoring( 1988 : Laguna, Philippines). Proceedings of the Training Course on Soil Erosion Sedimentation Control and Monitoring. Laguna, Philippines : [s.n.], 1988.
MLA -ийн эшлэл (9 дэх хэвлэлт)Training Course on Soil Erosion Sedimentation Control and Monitoring( 1988 : Laguna, Philippines). Proceedings of the Training Course on Soil Erosion Sedimentation Control and Monitoring. Laguna, Philippines : [s.n.], 1988.
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