Features and amenities of school playgrounds: A direct observation study of utilization and physical activity levels outside of school time

Colabianchi, Natalie; Maslow, Andréa; Swayampakala, Kamala. (2011). Features and amenities of school playgrounds: A direct observation study of utilization and physical activity levels outside of school time. International Journal of Behavioral Nutrition and Physical Activity. 8, 32.