00531nam a2200109Ia 4500008004100000100006500041245012500106260000900231490005500240650010500295700002100400241024s9999||||xx |||||||||||||| ||und||  aDe BEER, Carel                                               0aEfficiency of production systems in developing countries:A case- study in Peruvian metal working industry                 c1981  aDevelopment Research Institute, Occasional paper.7  aDEVELOPING COUNTRIES | PERU | METAL WORKING INDUSTRIES | METALLURGY | MINING | MINERAL INDUSTRIES     a TOON van de VEN