The research project of which the present study is the end result was initiated in late 1970, while I was affiliated with the Economisch Instituut voor de Bouwnijverheid (Economic Institute for the Construction Indus- try), Amsterdam, the Netherlands. This institution, in association with the Urban Development Authority, Kuala Lumpur, Malaysia, also suppor- ted fieldwork in Malaysia from early 1973 to spring 1975. This resulted in a report to the Malaysian government (Wegelin, 1975), which forms the basis of the present study. Improvement and extension of the earlier report to mould the study...