PT - JOURNAL ARTICLE AU - Harold Bierman, Jr. TI - Diversification AID - 10.3905/jpm.1978.29 DP - 1978 Oct 31 TA - The Journal of Portfolio Management PG - 29--32 VI - 5 IP - 1 4099 - https://pm-research.com/content/5/1/29.short 4100 - https://pm-research.com/content/5/1/29.full