Ali Akbar, Yulianto (2014) APPLICATION OF THE METHOD LEARNING TWO STAY TWO STRAY TO IMPROVE PERFORMANCE LEARNING HEALTH AND SAFETY (K3) IN MACHANICHAL ENGINEERING CLASS XI SMK COKROAMINOTO 2 BANJARNEGARA THE ACADEMIC YEAR 2013/2014. S1 thesis, Universitas Negeri Yogyakarta.