Febrianti; Tri Utami, I. .; Wahyuni, R.; Febriani, W. THE THE DIFFERENCES GIVING OF ENDORPHINE MASSAGE TOWARDS REDUCTION OF LABOR PAIN 1 ACTIVE PHASE IN PMB TIAS SUSIANAH, S.TR. KEB NORTH LAMPUNG IN 2020: THE DIFFERENCES GIVING OF ENDORPHINE MASSAGE TOWARDS REDUCTION OF LABOR PAIN 1 ACTIVE PHASE. Jaman 2021, 2, 52-60.