Nutrition education, hemoglobin levels, and nutrition knowledge of adolescent girls in Banyumas district - Sari, Hesti Permata; Department of Nutrition Science, Faculty of Health Sciences, Universitas Jenderal Soedirman, Jalan dr. Soeparno, Karangwangkal, Purwokerto, Indonesia 53123 (Alma Ata University Press, 2019)