Mustarduddin, Shofian Syarifuddin and Edwin Tony Sohdin Martua Simanjuntak (2021) “THE RELATIONSHIP OF HUSBAND’S KNOWLEDGE AND ATTITUDE TO CONTRACEPTION PARTICIPATION MALE OPERATING METHOD (MOP) I PUSKESMAS UJUNG PADANG SIMALUNGUN DISTRICT”, International Conference on Health Science, Green Economics, Educational Review and Technology, 3(1), pp. 402–407. doi: 10.54443/ihert.v3i.253.