The Secret to Maximizing Profitability: A Business Novel on How to Successfully Combine The Theory of Constraints, Lean, and Six Sigma to Drive Profit Margins to New Levels Showing the single result Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Sale! Wholesale The Secret to Maximizing Profitability: A Business Novel on How to Successfully Combine The Theory of Constraints, Lean, and Six Sigma to Drive Profit Margins to New Levels $39.99 Original price was: $39.99.$20.00Current price is: $20.00. BooksAdd to cart