%0 Journal Article %A Harold Bierman, Jr. %T Diversification %B Is there safety in numbers? %D 1978 %R 10.3905/jpm.1978.29 %J The Journal of Portfolio Management %P 29-32 %V 5 %N 1 %U https://jpm.pm-research.com/content/iijpormgmt/5/1/29.full.pdf