This paper should be displayed and printed as plain "typewriter type"  
text in a monospaced font such as Courier in order that tabular data  
in tables be properly aligned. Size of file about 76 KB. The author's  
e-mail address is wblocker@nmol.com. Comments will be welcomed. This  
paper in slightly revised form can also be found on the Internet at  
URL http://www.nmol.com/users/wblocker/index.htm along with two  
related papers.