Nugroho, Sakti Agung (2015) DIFFERENCE OF PHYSICAL FITNESS LEVEL ON SEVENTH, EIGHTH, AND NINTH GRADERS OF SMP NEGERI 1 MUNGKID IN THE ACADEMIC YEAR OF 2014/2015. DIFFERENCE OF PHYSICAL FITNESS LEVEL ON SEVENTH, EIGHTH, AND NINTH GRADERS OF SMP NEGERI 1 MUNGKID IN THE ACADEMIC YEAR OF 2014/2015.