Richard Koch

Books
80/20 Daily 80/20 Daily
80/20 Daily
2024
The 80/20 Principle The 80/20 Principle
The 80/20 Principle
2022
Living the 80/20 Way Living the 80/20 Way
Living the 80/20 Way
2011
80/20 Sales and Marketing 80/20 Sales and Marketing
80/20 Sales and Marketing
2013
O Princípio 80/20 O Princípio 80/20
O Princípio 80/20
2026
80 : 20 na každý deň 80 : 20 na každý deň
80 : 20 na každý deň
2025