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Maulana, P.; Darusalam, U.; Nathasia, N. D. Road Guides and Special Location Monitoring for Blind People Using Ultrasonic Sensors and Microcontroller-Based GPS Modules: Road Guides and Special Location Monitoring for Blind People Using Ultrasonic Sensors and Microcontroller-Based GPS Modules. Mantik 2020, 3, 444-450.