Journals / Trends in Business and Economics / 1990 / Cilt: 8 Sayı: 3-4Çeşitlendirme prensipleriC. Ronald SPRECHER, Çev. Reşat KARCIOĞLUJournalTrends in Business and EconomicsIssue1990 · Cilt: 8 Sayı: 3-4Pages1–1DOI—Özet.Keywords: -