All 1 R B Blackham releases on Paperback Book
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![Cover for R B Blackham · Systems Thinking in Europe (Paperback Book) [Softcover reprint of the original 1st ed. 1991 edition] (2012)](https://imusic.b-cdn.net/images/item/original/690/9781461366690.jpg?r-b-blackham-2012-systems-thinking-in-europe-paperback-book&class=scaled&v=1504610644)