Ethnically mixed marriages in the Soviet Union

Some karst regions of Indonesia (Java, Sulawesi, Bali, Madura), on closer examination geomorphologically and hydro-geologically quite distinct from each other, are checked with regard to land-use, settlement and other economic and cultural significance. Brief comparisons are made to similar regions from the Philippines (Bohol), Thailand etc. An amazingly strong differentiation, especially of the rice-cultivation systems, is determined by the varying access to water. Some densely populated limestone regions are suffering even from critical water supply for human consumption, cattle etc. Proposals for improvement and rural development are given. The comparison of agricultural landscape types under changing geo-ecological conditions yield fine examples of closely interwoven man-earth eco-systems.