Beretning, ved Otto Grenness. - Oslo, E.B. Oppi, 1925. - 192 p. 24 cm. LCCN: e 32000380 Subjects--Topical Terms: Physical education and training--Congresses.Physical education and training--Congresses.--ScandinaviaSchool hygiene--Congresses.--Scandinavia LC Class. No.: GV205 / .N58 1924