ELECTRONIC	w   w   w dot e c o n c l u b c h i dot o r g   s l a s h   h i s t o r y   s l a s h   e x c e r p t s   u n d e r s c o r e   a l f r e d e p e r l m a n dot p   d   f	www.econclubchi.org/history/excerpts_alfredeperlman.pdf	1