TY - GEN AV - public TI - ARTIKEL- Effectiveness of Using Electromagnetic-Based Physical Pendulum Practical Tools Using Infrared Sensors in Basic Physics Practical 1 ID - repository44667 A1 - Imas Ratna Ermawati, IRE UR - http://repository.uhamka.ac.id/id/eprint/44667/ PB - uhamka ER -