Originally published in 1949 and appearing now for the first time in a paperbound edition, Buck's Dictionary remains an indispensable tool for diachronic analysis of the Indo-European languages. Arranged according to the meaning of words, the work contains more than 1,000 groupings of synonyms from the principal Indo-European languages. Buck first tabulates the words describing a particular concept and then discusses their etymological and semantic history, tracing changes in meaning of the root words as well as presenting cases indicating which of the older forms have been replaced by expressions of colloquial or foreign origin.
carl buck is great this is an incredibly comprehensive dictionary of IE etymology BUT the paperback version has FOUR standard pages printed per page so can be a bit challenging to read without a magnifier. Maybe I am just getting old and more easily frustrated by such formatting issues than when I was young and easy under the apple boughs. So perhaps I need to find the original Chicago hard back and see if it has better formatting. Oh by the way also read his comparative grammar of latin and greek.