International Foundation for Science. 1993. Proceedings of first IFS-NRCP seminar-workshop : towards more effective utilization of resources for sustained development 26-29 April 1993 Makati, Metro Manila Philippines. Stockholm:International Foundation for Science;
International Foundation for Science. (1993) Proceedings of first IFS-NRCP seminar-workshop : towards more effective utilization of resources for sustained development 26-29 April 1993 Makati, Metro Manila Philippines (รายงานผลงานวิจัย). International Foundation for Science:Stockholm.
International Foundation for Science. Proceedings of first IFS-NRCP seminar-workshop : towards more effective utilization of resources for sustained development 26-29 April 1993 Makati, Metro Manila Philippines. Stockholm:International Foundation for Science, 1993.
International Foundation for Science. (1993) Proceedings of first IFS-NRCP seminar-workshop : towards more effective utilization of resources for sustained development 26-29 April 1993 Makati, Metro Manila Philippines (รายงานผลงานวิจัย). International Foundation for Science:Stockholm.