[Mode of spending free time among Warsaw children 9- to 13-years-old].
D000293:Adolescent; D000367:Age Factors; D002648:Child; D005260:Female; D006801:Humans; D007899:Leisure Activities; D008297:Male; D010988:Play and Playthings; D011044:Poland; D013177:Sports; D013690:Television; D014505:Urban Population
Sposób spedzania czasu wolnego przez dzieci warszawskie w wieku 9-13 lat.