TRITES RONALD L. [red.] 544,539 HYPERACTIVITY Hyperactivity in children : etiology, measurement, and treatment implications : [Papers presented at a sympo-­ sium held in Ottawa, Canada, Feb. 1978] / ed. by Ronald L. Trites. - Baltimore : Univ. Park Press, [1979]. - XIII, [1], 241 s. : il., wykr. ; 24 cm ISBN 0-8391-1400-1