There has been a dramatic increase in the divorce-rate throughout the 20th Century. You can lower your chances for divorce to less than 5%, help heal your marriage, improve communication with your spouse, and follow the teachings of the Catholic Church! You can begin divorce-proofing your marriage today!
Divorce-Proofing Your Marriage with Natural Family Planning
The Bible and Birth Control 
Family Life Center International; Natural Family Planning (NFP)

Casti Connubi: The Church’s Answer to Planned Parenthood
Are We Talking to Ourselves?
Christian Fatherhood
   Chapter 10; Building Our Marriages and Families On the Rock; pgs 125 -139