title: [Recreation of children and adolescents. Variation of the blood picture as indicator of its effectiveness].
mesh_terms: D000293:Adolescent; D002648:Child; D002662:Child Health Services; D003604:Czechoslovakia; D004906:Erythrocyte Count; D005260:Female; D005500:Follow-Up Studies; D006405:Hematology; D006452:Hemoglobinometry; D006801:Humans; D008297:Male; D011998:Recreation; D013177:Sports
vernacular_title: Rekreace dĕtí a mládeze. Zmĕny krevního obrazu jako indikátor její efektivnosti.