[ERGOSPIROGRAPHIC STUDIES OF 12-YEAR-OLD CHILDREN. (CONTRIBUTION TO THE PROBLEM OF PHYSICAL FITNESS IN THIS AGE GROUP)].
D002648:Child; D005858:Germany; D005859:Germany, East; D006801:Humans; D010809:Physical Fitness; D012129:Respiratory Function Tests
CHILD; GERMANY, EAST; PHYSICAL FITNESS; RESPIRATORY FUNCTION TESTS
ERGOSPIROGRAPHISCHE UNTERSUCHUNGEN BEI 12 JAEHRIGEN KINDERN. (EIN BEITRAG ZUR FRAGE DER KOERPERLICHEN LEISTUNGSFAEHIGKEIT IN DIESEM ALTER)