TY - BOOK T1 - Frontiers of fitness. DA - [1971] CY - Springfield, Ill., AU - Shephard, Roy J., CN - RC1235 CN - RC1235 PB - Thomas PP - Springfield, Ill., PY - [1971] N1 - "Published under the auspices of the Canadian Association of Sports Sciences." ID - 77843 KW - Exercise KW - Muscle contraction. TI - Frontiers of fitness. ER -