TY - BOOK AU - Mazzeo, Karen S TI - Fitness through aerobics, step training, walking SN - 9780495012719 SN - 200593732 U1 - 613.71 MAZ PY - 2007/// CY - Boston, MA PB - Thomson Higher Education KW - Aerobic exercises KW - Step aerobics N1 - Includes bibliographical references (p. 177-181) ER -