Contents 1. 비수술적 정관 절단법 및 정관내 이물설치법에 관한 실험적 연구 2. 정관문합술시의 각종 splint의 비교고찰을 위한 실험적연구와 정관문합술의 임상성공예 3. 정관절제술이 심신에 미치는 영향에 관한 연구 4. Experimental Stdueis on Biological, Histologic and Histochemical Effects of Vasectomy 5. Vasectomy Through Single Skin Incision and Immediate Sperm Clearance Method 6. Reversible Vas Occlusion Method on Experimental Animals 7. Experimental Studies on Reversible Vas Occlusion by Intravasal Thread 8. Clinical Studies on Reversible Vas Occlusion by Intravasal Thread 9. Anastomsis of the Vas Deferens 10. A Cumlative Report of the Anastomosis of Vas Deferens 11. Surgical Techniques and results of Vasovasotomy 12. Effects of early ambulation on success rate and report of 85 vasovasostomies 12. Male Sterilization and a Modified Vasectomy Hook 13. Experimental Studies on Reversible Vas Occlusion by Intravasal Thread 14. Summary of Studies on Vasectomy Read at the World Conference on Human Sterilization 15. Effects of Vasectomy on Medical and Psychosocial Aspects