TY - BOOK AU - Gulick,Luther Halsey TI - Exercise and rest, T2 - [Russell Sage Foundation. Dept. of child hygiene. Pamphlets] AV - GV341 .G9 PY - 1910///] CY - New York city PB - Dept. of child hygiene of the Russell Sage Foundation KW - Exercise N1 - "Address delivered at the Academy of medicine, New York, 1910."; "Reprinted from the North American review, October, 1910." ER -