Dear Pen-L, Some years ago I did a very serious search to find everything written by Kondratieff that had been translated into English. I found that there is very, very little primary source material in English ,and, not a lot of good secondary stuff worth quoting. ( I'm not real down on Arthur Burns either.) Unless, some of his stuff survived in Russia---no one will ever really know what the guy was trying to get at. Your email pal, Tom L.