TY - BOOK AU - Root Leon TI - No more aching back: Dr. Root's new, 15-minute-a-day program for a healthy back SN - 0394587944 AV - WE720 U1 - 617.5/64 PY - 1990/// CY - New York PB - Villard Books KW - Backache KW - Exercise therapy KW - Prevention ER -