CLASS EMPOWERMENT OF PREGNANT WOMEN ABOUT COUNTERPRESSURE EDUCATION AND BIRTH BALL FOR PAIN OF LABOR: CLASS EMPOWERMENT OF PREGNANT WOMEN ABOUT COUNTERPRESSURE EDUCATION AND BIRTH BALL FOR PAIN OF LABOR. JPK [Internet]. 2022 Dec. 31 [cited 2026 Jan. 10];2(2):145-7. Available from: https://ejournal.medistra.ac.id/index.php/JPK/article/view/1313