A study to determine the relationship of initial pulse rate, recovery pulse rate, recovery index and subjective appraisal of physical condition after various durations of work / by Jean W. Clark
Microform. Eugene, Univ. of Oregon, School of Health, Physical Education and Recreation, 1969. 3 microopaques ; 8 x 13 cm. (Oregon. University. School of Health, Physical Education and Recreation / Microform publications)