Pundert, L. de & Polderman, A. M. (Social Geography), 1999
The agricultural transition towards sustainable tropical land use and future visions of farmers in the Philippines.

Kusters, K. (Social Geography), 1999
A case study of bamboo utilization in the context of deforestation in a Sierra Madre community.

Berge, A. ten (Social Geography), 1999
Urban and overseas employment in the Sierra Madre.

Inberg, L. (Social Geography), 1999
How to taake the plunge. Overseas employment in the Cagayan Valley, with special reference to recruitment.

Hollestelle, M. (Development Science), 1999
Transition from personal value to ‘Social Capital ‘.

Laak, X. op de, Brekelmans, F. (Biology), 1999
The biophysical effects of use and management of woody patches in the grassland area.

Rees, M. van (Social Geography), 1999
Socio-economic study of local use and management of woody patches in grassland areas.

Scheumie, M. (Anthropology), 1999
Socio-economic study of marketing channels and ‘urban’ use of products derived from woody patches in grassland areas.

Belleghem, S. van & Flikweert, J. (Nature and Landscape Engineering), 1999
Change in land use and its effect on woody patches in open grassland of north-eastern Luzon

Schaaf, C. van der (Tropical Agriculture), 1999
Indigenous Claims Over Land in the Northern Sierra Madre Natural Park, the Philippines.

Gilsing, I. and Wilgenburg, W. van (Visual Anthropology), 1999
SIFMA as an instrument for co-management within the Sierra madre Natural Park.

Roos, A. N. (Tropical Forestry), 1999
Assessment of Priorities of Action for Promoting the Sustainable Use of NTFP’s in the Northern Sierra Madre Natural Park.

Mangabat, C.B, Taggued, J.B., Ong, H.B., Guingab, T.S., 1999
Where to Bamboo? A look into Commercial Bamboo Marketing in Isabela, Philippines