TY - RPRT TI - Low-back stresses when learning to use a materials handling device. AU - D B Chaffin AU - B S Stump AU - M A Nussbaum AU - G Baker PY - 1999 DO - 10.1080/001401399185829 UR - https://pubmed.ncbi.nlm.nih.gov/9973874/ ID - 9973874 ER -