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Praktische Analyse und Kontrolle von Umsatz und Gewinn
Linnert, Peter, (1974)
Techniques of profitability analysis
Goodman, Sam R., (1970)
Profit rates and market shares of leading industrial firms in Japan
Nakao, Takeo, (1979)
Distribution systems management : key to profits in the sixties
Hill, W. Clayton, (1969)
Reorganizing distribution for higher profits
(1971)