1. Andersson, D., Williams, R.H., 1994. The cost-effectiveness of GEF projects. UNDP/UNEP/The World Bank, Working Paper 6, 36 pp.
2. Calder, I.R., 1991. Water use of eucalypts—a review. In: Calder, I.R., Hall, R.L., Adlard, P.G. (Eds.), Proc. Symp. 4–7 February 1991, Bangalore, India. pp. 167–179.
3. Calder, I.R., Swaminath, M.H., Kariyappa, G.S., Srinivasalu, N.V., Srinivasa Murthy, K.V., Mumtaz, J., 1991. Measurement of transpiration from Eucalyptus plantations, India, using deuterium tracing. In: Calder, I.R., Hall, R.L., Adlard, P.G. (Eds.), Proc. Symp. 4–7 February 1991, Bangalore, India. pp. 196–216.
4. Cruz, W.D., Francisco, H.A., Conway, Z.T., 1988. The on-site and downstream costs of soil erosion in the Magat and Pantabangan watersheds. J. Philipp. Dev. XV (1), 85–111.
5. David, W.P., 1988. Soil and water conservation planning: Policy issues and recommendations. J. Philipp. Dev. XV (1), 47–84.