The on-line version (November 2012 -- see bottom of copyright page) http://walden-family.com/bbn/bbn-print2.pdf includes corrections of typos and a few other small errors found in the orininal end-of-2011 printed version. As my website won't live forever, the book is also in the on-line archives at the CBI and the CHM, for which I again say "thank you." Sent from my iPad