The Sixty/Forty Rule
Ratings3
Average rating3.7
15
Type: Physical Book
Pages: 363
Format: Kindle Edition
Release Date: Unknown
Readers: 5
Country: United States of America
Data Score: 550
Ratings3
Average rating3.7
Type: Physical Book
Pages: 363
Format: Kindle Edition
Release Date: Unknown
Readers: 5
Country: United States of America
Data Score: 550