DO AEROBIC INSTRUCTORS EXPERIENCE VOICE PROBLEMS? 1208

Autor: Williford, H. N., Olson, M. Scharff, Long, J. A., Wolfe, V. I.
Zdroj: Medicine & Science in Sports & Exercise; May 1997, Vol. 29 Issue: Supplement 5 p212-212, 1p
Databáze: Supplemental Index