Richard Koch has written at least 17 books. Their most popular book is The 80/20 Principle with 49 saves with an average rating of 3⭐.
49 Readers • 3
4 Readers • 2.3
1997 • 3 Readers • 2.7
2010 • 2 Readers • 3
2010 • 1 Reader
1 Reader • 3
2012 • 1 Reader • 288 pages
1 Reader • 4
2020 • 1 Reader • 240 pages • 3
1997 • 1 Reader • 347 pages
2004 • 1 Reader • 198 pages
2013 • 1 Reader
1 Reader • 307 pages
1 Reader
1924 • 116 pages
2011 • 142 pages
2015 • 338 pages